The Dyno-Rod Cup is thought to have been donated at the 1989 Nationals (which Dyno-Rod sponsored), and is awarded to the Leading boat from Devon or Cornwall with Helm & Crew under 18 years of age at the National Championships.
Here are some photographs of past winners
| Year | Held by | Note |
| 2022 | Max Phypers & Emma Sellwood | |
| 2021 | Milly Tregaskes & Taryn Banks | |
| 2019 | Nuala Sellwood & Oscar Phypers | |
| 2018 | Nuala Sellwood & Oscar Phypers | |
| 2017 | Archie Hawkins & Jack Stevens | |
| 2016 | Joe Jackman & Jack Sergent | |
| 2015 | Ollie & Archie Hawkins | |
| 2014 | Not returned, so not awarded | |
| 2013 | Not returned, so not awarded according to the 2013 trophy list. | |
| 2012 | Not photographed among the trophies at the 2012 Nationals at Itchenor SC | |
| 2011 | Tom Cosier & Niamh O'Neill | according to the 2011 trophy list. |
| 2010 | James Wilkinson & Esme Shepherd | |
| 2002 | Darren Roach | |
| 2001 |
Rob Grieg-Gran & Jonny Telford (top left and bottom right) |
