Hamish plans to take his dad Mike Flynn, who owns Saltwater Sports Fishing Products in Te Awamutu, along for the trip.
Three more Te Awamutu men — Greig Furniss, Russell Heron and Brent Knowles — scooped major prizes at the competition.
Greig won the prize for the biggest kingfish (12.93kg), Brent for the biggest snapper (7.6kg) and Russell for the biggest kahawai (3.335kg).
Greig also won the prize for the second-biggest kahawai (3.305kg).
They entered the three-day competition on Russell's Haines Hunter boat named Even Time, one of 70 boats in the competition.
Between the three men they have more than 100 years' experience fishing in Kāwhia.
Te Awamutu's John Warburton caught the third-largest snapper (6.31kg).