Dowiyogo walked away with cash prize of $5,000.
The challenging marlin fishing competition dubbed the Minister's Cup was held from Monday November 13 to Saturday November 20.
The competition that has been running for a number of years now has not produced a winner for many months because of the boats not being able to register a marlin catch weighing 100kg or more.
Other winners of the day's national trolling competition included:
Tuna category single heaviest
1. BJ Scotty - 22.4kg tuna