| 2025 | North American Championship | 9262 | Howard Hamlin | Jeffrey Nelson | 1 (36) |
| 2025 | UK National Championship | 9262 | Howard Hamlin | Andrew Zinn | 2 (24) |
| 2025 | Pacific Coast Championship | 9266 | Howard Hamlin | Jeffrey Nelson | 2 (20) |
| 2025 | Blue Garden Riva Cup | 9262 | Howard Hamlin | | 2 (40) |
| 2025 | Saint Raphaël | 926 | Howard Hamlin | Jon Bell | 4 (29) |
| 2025 | Spring Dinghy | 9262 | Howard Hamlin | Jon Bell | 1 (9) |
| 2025 | E. E. Manning Regatta/CFJ Shadden Series | 9262 | Howard Hamlin | Matt Merchant | 1 (7) |
| 2025 | World Championship | 9262 | Howard Hamlin | Andrew Zinn | 5 (70) |
| 2024 | Pre-Worlds | 9262 | Howard Hamlin | Andrew Zinn | 1 (70) |
| 2024 | Pacific Coast Championship | 9262 | Howard Hamlin | Garrett Brown | 8 (17) |
| 2024 | World Championship | 9262 | Howard Hamlin | Andrew Zinn | 3 (95) |
| 2024 | Pre-Worlds & Open Nordic Championship | 9262 | Howard Hamlin | Andrew Zinn | 4 (82) |
| 2024 | UK National and Open Championship | 9262 | Howard Hamlin | Andrew Zinn | 1 (26) |
| 2024 | Blue Garden Riva Cup | 9262 | Howard Hamlin | Stephen Bourdow | 2 (41) |
| 2024 | North American Championship | 9160 | Howard Hamlin | Andrew Zinn | 1 (27) |
| 2024 | Saint Raphaël | 9262 | Howard Hamlin | Jeffrey Nelson | 4 (31) |
| 2024 | E. E. Manning Regatta | 9160 | Howard Hamlin | Andrew Zinn | 2 (12) |
| 2023 | World Championship | 9160 | Howard Hamlin | Jeffrey Nelson | 7 (59) |
| 2023 | Pre-Worlds & North American Championship | 9160 | Howard Hamlin | Jeffrey Nelson | 5 (60) |
| 2023 | Pacific Coast Championship | 9153 | Howard Hamlin | Jeffrey Nelson | 4 (20) |
| 2023 | European Championship | 9262 | Howard Hamlin | Jon Bell | 7 (72) |
| 2023 | June Regatta | 9153 | Howard Hamlin | Jeffrey Nelson | 2 (15) |
| 2023 | UK National Championship | 9153 | Howard Hamlin | Jeffrey Nelson | 2 (21) |
| 2023 | Riva del Garda | 9153 | Howard Hamlin | Caleb Paine | 4 (38) |
| 2023 | Saint Raphaël | 8474 | Howard Hamlin | Ian Mitchell | 3 (33) |
| 2022 | Fall Dinghy | 9160 | Howard Hamlin | Stephen Bourdow | 2 (11) |
| 2022 | Pacific Coast Championship | 9160 | Howard Hamlin | Jeffrey Nelson | 3 (26) |
| 2022 | Pre-Worlds | 9153 | Howard Hamlin | Jeffrey Nelson | 7 (70) |
| 2022 | World Championship | 9153 | Howard Hamlin | Jeffrey Nelson | 9 (76) |
| 2022 | Spring Regatta | 9160 | Howard Hamlin | Jeffrey Nelson | 4 (12) |
| 2022 | UK National Championship | 9153 | Howard Hamlin | Caleb Paine | 9 (20) |
| 2022 | Riva del Garda | 9153 | Howard Hamlin | Jeffrey Nelson | 5 (34) |
| 2022 | Elvstrom Zellerbach | 9160 | Howard Hamlin | Jeffrey Nelson | 2 (12) |
| 2022 | Spring Dinghy | 9160 | Howard Hamlin | Jeffrey Nelson | 3 (10) |
| 2022 | North American Championship | 9160 | Howard Hamlin | Jeffrey Nelson | 4 (33) |
| 2022 | Midwinters | 9160 | Howard Hamlin | Jesse Falsone | 5 (26) |
| 2021 | Santa Cruz Fall Regatta | 916 | Howard Hamlin | Jeffrey Nelson | 2 (7) |
| 2021 | Carl Miller Regatta | 9160 | Howard Hamlin | | 3 (15) |
| 2021 | Fall Dinghy | 9160 | Howard Hamlin | Steve Bourdow/Caleb Paine | 2 (7) |
| 2021 | North American Championship | 9160 | Howard Hamlin | Jeffrey Nelson | 5 (31) |
| 2021 | Pacific Coast Championship – Columbia Gorge One-Design Regatta | 9160 | Howard Hamlin | Reeve Dunne | 4 (10) |
| 2021 | Santa Cruz Summer Regatta | 9160 | Howard Hamlin | Howard P Hamlin | 2 (13) |
| 2020 | Santa Cruz Fall Regatta | 9160 | Howard Hamlin | Jeffrey Nelson | 1 (7) |
| 2020 | Not North Americans | 9160 | Howard Hamlin | Andrew Zinn | 1 (11) |
| 2019 | North American Championship | 9160 | Howard Hamlin | Russell Clark | 2 (39) |
| 2019 | Canadian Championship | 9160 | Howard Hamlin | Russell Clark | 2 (23) |
| 2019 | European Championship | 9153 | Howard Hamlin | Jeffrey Nelson | 3 (75) |
| 2019 | Columbia Gorge One-Design Regatta | 9160 | Howard Hamlin | Jeffrey Nelson | 2 (19) |
| 2019 | Exhibition Regatta Barcelona | 9153 | Howard Hamlin | Ian Mitchell | 2 (10) |
| 2019 | Riva del Garda | 9153 | Howard Hamlin | Jon Bell | 8 (51) |
| 2019 | Cannes | 9153 | Howard Hamlin | Jeffrey Nelson | 2 (31) |
| 2019 | Pre-Worlds | 9160 | Howard Hamlin | Jeffrey Nelson | 9 (89) |
| 2019 | World Championship | 9160 | Howard Hamlin | Jeffrey Nelson | 5 (89) |
| 2018 | Hayling Island | 9153 | Howard Hamlin | Jon Bell | 1 (28) |
| 2018 | North American Championship | 9160 | Howard Hamlin | Andrew Zinn | 2 (24) |
| 2018 | World Championship | 9153 | Howard Hamlin | Andrew Zinn | 11 (127) |
| 2018 | Pre-Worlds | 9153 | Howard Hamlin | Howard Hamlin Jr. | 9 (129) |
| 2018 | Riva del Garda | 9153 | Howard Hamlin | Jeffrey Nelson | 10 (56) |
| 2018 | Cannes | 9153 | Howard Hamlin | Jeffrey Nelson | 3 (38) |
| 2017 | World Championship | 9160 | Howard Hamlin | Andrew Zinn | 7 (87) |
| 2017 | Pacific Coast Championship | 9153 | Howard Hamlin | | 5 (21) |
| 2017 | European Championship | 9153 | Howard Hamlin | Jeffrey Nelson | 6 (94) |
| 2017 | North American Championship | 9080 | Howard Hamlin | Andrew Zinn | 1 (25) |
| 2017 | Riva del Garda | 9153 | Howard Hamlin | Jeffrey Nelson | 2 (45) |
| 2016 | October 5O5 – Santa Cruz Regatta | 9080 | Howard Hamlin | Andrew Zinn | 2 (9) |
| 2016 | Pacific Coast Championship | 9080 | Howard Hamlin | Andrew Zinn | 2 (14) |
| 2016 | East Coast Championship | 9173 | Howard Hamlin | Jeffrey Nelson | 4 (34) |
| 2016 | Pre-Worlds & UK National Championship | 9153 | Howard Hamlin | Andrew Zinn | 4 (99) |
| 2016 | World Championship | 9153 | Howard Hamlin | Andrew Zinn | 8 (130) |
| 2016 | North American Championship | 9080 | Howard Hamlin | Jeffrey Nelson | 2 (49) |
| 2016 | Santa Cruz Regatta | 9080 | Howard Hamlin | Andrew Zinn | 2 (9) |
| 2016 | Hyères | 9153 | Howard Hamlin | Jeffrey Nelson | 5 (50) |
| 2016 | Spring Dinghy | 9080 | Howard Hamlin | Reeve Dunne | 4 (14) |
| 2015 | North American Championship | 9080 | Howard Hamlin | Andrew Zinn | 1 (33) |
| 2015 | European Championship | 9153 | Howard Hamlin | Jon Bell | 13 (101) |
| 2015 | Nordiska och Svenska mästerskapen | 9153 | Howard Hamlin | Jon Bell | 5 (44) |
| 2015 | UK National Championship | 9153 | Howard Hamlin | Jeffrey Nelson | 2 (33) |
| 2015 | Pacific Coast Championship | 9080 | Howard Hamlin | Andrew Zinn | 1 (17) |
| 2015 | World Championship | 9153 | Howard Hamlin | Jeffrey Nelson | 10 (36) |
| 2015 | Pre-Worlds | 9153 | Howard Hamlin | Jeffrey Nelson | 21 (33) |
| 2014 | Pre-Worlds | 9080 | Howard Hamlin | Andrew Zinn | 1 (85) |
| 2014 | World Championship | 9080 | Howard Hamlin | Andrew Zinn | 9 (161) |
| 2014 | Columbia Gorge One-Design Regatta | 9080 | Howard Hamlin | | 1 (10) |
| 2014 | North American Championship | 9080 | Howard Hamlin | Andrew Zinn | 1 (40) |
| 2014 | Spring Regatta | 9080 | Howard Hamlin | | 2 (14) |
| 2013 | World Championship | 9080 | Howard Hamlin | Andrew Zinn | 13 (77) |
| 2012 | World Championship | 9080 | Howard Hamlin | Andrew Zinn | 16 (188) |
| 2012 | Pre-Worlds & French Nationals | 9080 | Howard Hamlin | Andrew Zinn | 1 (118) |
| 2012 | Kick Off Regatta | 9080 | Howard Hamlin | | 1 (11) |
| 2011 | Pre-Worlds | 8762 | Howard Hamlin | Andrew Zinn | 3 (78) |
| 2011 | World Championship | 8762 | Howard Hamlin | Andrew Zinn | 4 (85) |
| 2010 | International Sportboat Anarchy Festival | 8762 | Howard Hamlin | | 1 (16) |
| 2010 | World Championship | 8762 | Howard Hamlin | Andrew Zinn | 4 (125) |
| 2010 | Pre-Worlds | 8762 | Howard Hamlin | Andrew Zinn | 5 (77) |
| 2010 | EuroCup Ranking | 8762 | Howard Hamlin | Andrew Zinn | 73 (203) |
| 2009 | World Championship | 8762 | Howard Hamlin | Ian Mitchell Paul Cayard | 7 (98) |
| 2009 | Pre-Worlds | 8762 | Howard Hamlin | Ian Mitchell | 3 (69) |
| 2009 | North American Championship | 8878 | Howard Hamlin | Peter Alarie | 3 (32) |
| 2008 | World Championship | 8762 | Howard Hamlin | Andrew Zinn | 2 (123) |
| 2008 | Pre-Worlds & EuroCup Finale | 8762 | Howard Hamlin | Andrew Zinn | 3 (69) |
| 2008 | European Championship | 8762 | Howard Hamlin | Andrew Zinn | 3 (69) |
| 2007 | World Championship | 8266 | Howard Hamlin | Fritz Lanzinger | 2 (92) |
| 2007 | Pre-Worlds | 8266 | Howard Hamlin | Ami Lanzinger | 2 (86) |
| 2006 | World Championship | 8266 | Howard Hamlin | Jeffrey Nelson | 2 (113) |
| 2006 | Pre-Worlds & UK National Championship | 8266 | Howard Hamlin | Jeffrey Nelson | 1 (76) |
| 2006 | Thrilla in Cabrilla | 0 | Howard Hamlin | Geoff Nelson | 1 (11) |
| 2005 | World Championship | 8266 | Howard Hamlin | Cameron Lewis | 9 (170) |
| 2005 | Pre-Worlds | 8266 | Howard Hamlin | Cameron Lewis | 5 (114) |
| 2005 | Deutsche Meisterschaft | 8266 | Howard Hamlin | Cameron Lewis | 3 (63) |
| 2005 | Travemünder Woche | 8266 | Howard Hamlin | Cameron Lewis | 3 (63) |
| 2004 | World Championship | 8266 | Howard Hamlin | Peter Alarie | 2 (102) |
| 2004 | Pre-Worlds | 8714 | Howard Hamlin | Mike Martin | 3 (80) |
| 2003 | World Championship | 8714 | Howard Hamlin | Peter Alarie | 3 (81) |
| 2003 | Pre-Worlds | 8714 | Howard Hamlin | Peter Alarie | 1 (66) |
| 2003 | Pacific Coast Championship | 8714 | Howard Hamlin | Peter Alarie | 1 (22) |
| 2002 | World Championship | 8714 | Howard Hamlin | Mike Martin | 2 (98) |
| 2002 | Pre-Worlds | 8714 | Howard Hamlin | Mike Martin | 1 (93) |
| 2001 | World Championship | 8714 | Howard Hamlin | Mike Martin | 5 (105) |
| 2001 | Pre-Worlds | 8714 | Howard Hamlin | Mike Martin | 1 (34) |
| 2001 | North American Championship | 8714 | Howard Hamlin | Mike Martin | 1 (35) |
| 2001 | Spring #1 | 8714 | Howard Hamlin | Mike Martin | 3 (17) |
| 2001 | St. Francis Spring Dinghy | 8266 | Howard Hamlin | Mike Martin | 1 (16) |
| 2000 | World Championship | 8266 | Howard Hamlin | Peter Alarie | 3 (61) |
| 2000 | North American Championship | 8266 | Howard Hamlin | Peter Alarie | 2 (45) |
| 2000 | Pacific Coast Championship | 8266 | Howard Hamlin | Peter Alarie | 1 (29) |
| 2000 | Santa Cruz YC Regatta | 8266 | Howard Hamlin | Peter Alarie | 1 (11) |
| 2000 | Santa Cruz One Design Spring Open | 8266 | Howard Hamlin | Peter Alarie | 1 (17) |
| 2000 | Richmond Spring Invite | 8266 | Howard Hamlin | Peter Alarie | 2 (14) |
| 2000 | Hi-Per/Spring Dinghy Regatta | 8266 | Howard Hamlin | Don Smith | 5 (12) |
| 2000 | Spring Dinghy | 8266 | Howard Hamlin | Don Smith | 2 (17) |
| 1999 | World Championship | 8266 | Howard Hamlin | Mike Martin | 1 (157) |
| 1999 | Pre-Worlds | 8266 | Howard Hamlin | Mike Martin | 2 (88) |
| 1999 | North American Championship | 7771 | Howard Hamlin | Mike Martin | 1 (14) |
| 1999 | Hi-Per | 0 | Howard Hamlin | Mike Martin | 1 (6) |
| 1999 | West Coast Midwinters | 8771 | Howard Hamlin | Mike Martin | 1 (5) |
| 1998 | World Championship | 7771 | Howard Hamlin | Mike Martin | 2 (106) |
| 1998 | Pre-Worlds & North American Championship | 7771 | Howard Hamlin | Mike Martin | 10 (90) |
| 1998 | Pacific Coast Championship | 0 | Mike Martin | Howard Hamlin | 1 (18) |
| 1998 | High Sierra Regatta | 0 | Mike Martin | Howard Hamlin | 1 (13) |
| 1998 | St Francis Regatta | 7771 | Mike Martin | Howard Hamlin | 1 (15) |
| 1998 | ABYC Memorial Day Regatta | 7771 | Howard Hamlin | Mike Martin | 1 (12) |
| 1998 | European Championship | 7771 | Howard Hamlin | Mike Martin | 5 (36) |
| 1998 | Santa Cruz Spring Open Regatta | 7771 | Mike Martin | Howard Hamlin | 1 (15) |
| 1998 | Hiper regatta | 7771 | Mike Martin | Howard Hamlin | 2 (11) |
| 1998 | Spring Dinghy | 0 | Howard Hamlin | Mike Martin | 1 (11) |
| 1997 | Halloween Regatta | 0 | Mike Martin | Howard Hamlin | 4 (6) |
| 1997 | Pacific Coast Championship | 8266 | Howard Hamlin | Mike Martin | 1 (19) |
| 1997 | World Championship | 8266 | Howard Hamlin | Mike Martin | 3 (79) |
| 1997 | Pre-Worlds & Danish Championship | 8266 | Howard Hamlin | Mike Martin | 3 (70) |
| 1997 | North American Championship | 8266 | Howard Hamlin | Mike Martin | 2 (35) |
| 1997 | St. Francis Regatta | 7771 | Howard Hamlin | Mike Martin | 1 (12) |
| 1997 | Southern California Midwinters | 7771 | Howard Hamlin | Mike Martin | 1 (10) |
| 1996 | Fall Dinghy | 7771 | Howard Hamlin | Mike Martin | 1 (10) |
| 1996 | North American Championship | 7771 | Howard Hamlin | Mike Martin | 1 (34) |
| 1996 | St. Francis Regatta | 7771 | Howard Hamlin | Mike Martin | 2 (14) |
| 1996 | World Championship | 8266 | Howard Hamlin | Cameron Lewis | 2 (96) |
| 1996 | Pre-Worlds | 8266 | Howard Hamlin | Cameron Lewis | 3 (98) |
| 1996 | Southern California Midwinters | 0 | Cameron Lewis | Howard Hamlin | 3 (10) |
| 1996 | St. Francis Spring Dinghy | 8266 | Howard Hamlin | Rick Rattray | 1 (12) |
| 1996 | Pacific Coast Championship | 8266 | Howard Hamlin | Mike Martin | 1 (10) |
| 1996 | Canadian Championship | 7771 | Howard Hamlin | Mike Martin | 1 (0) |
| 1995 | Pacific Coast Championship | 8266 | Howard Hamlin | Mike Jankowski | 2 (24) |
| 1995 | North American Championship | 7771 | Howard Hamlin | Mike Martin | 2 (26) |
| 1995 | World Championship | 8266 | Howard Hamlin | Mike Martin | 12 (106) |
| 1995 | Canadian Championship | 7771 | Howard Hamlin | Mike Martin | 5 (22) |
| 1994 | European Championship | 8266 | Howard Hamlin | Mike Martin | 3 (63) |
| 1994 | World Championship | 8266 | Howard Hamlin | Cameron Lewis | 4 (41) |
| 1993 | North American Championship | 7201 | Howard Hamlin | Steve Rosenberg | 4 (31) |
| 1992 | World Championship | 7201 | Howard Hamlin | Cameron Lewis | 8 (78) |
| 1991 | World Championship | 7201 | Howard Hamlin | Steve Rosenberg | 12 (83) |
| 1990 | World Championship | 7201 | Howard Hamlin | Steve Rosenberg | 4 (76) |
| 1989 | World Championship | 7201 | Howard Hamlin | Don Smith | 16 (90) |
| 1988 | World Championship | 7201 | Howard Hamlin | Jay Glaser | 19 (90) |
| 1987 | World Championship | 7201 | Howard Hamlin | Jay Glaser | 13 (74) |
| 1986 | World Championship | 7201 | Howard Hamlin | Jay Glaser | 17 (87) |
| 1985 | World Championship | 7152 | Howard Hamlin | Thomas Poore | 9 (55) |
| 1984 | World Championship | 7152 | Howard Hamlin | Rick Rattray | 3 (90) |
| 1982 | World Championship | 7152 | Howard Hamlin | Jon Andron | 17 (73) |
| 1981 | World Championship | 7152 | Jon Andron | Howard Hamlin | 8 (86) |
| 1981 | Pre-Worlds | 7152 | Jon Andron | Howard Hamlin | 2 (90) |
| 1980 | World Championship | 7152 | Jon Andron | Howard Hamlin | 2 (85) |
| 1978 | World Championship | 6136 | Jon Andron | Howard Hamlin | 10 (86) |
Howard Hamlin