Taking on Shaun Sansom in the Men's Open final, Trimble won in four sets.
He took the first two games before a fightback from Sansom in the third game kept the contest interesting.
Trimble showed his much-vaunted ability to clinch the contest in the fourth game.
The American group got on the podium as Mike Toothill, the coach of the Americans, snared third in the division with a four-game victory over Max Trimble.
In other divisions, ex-Northlander Daniel Clay took out the Mens Division One title with Kamo's Anna Moselen winning the Ladies competition.
The Division Two Mens winner was Whangarei's Jack Johnson with Amy Brown from Mangakahia taking out the Ladies Division Two.
Manaia's Campbell Griffin clinched Division Three while Division Four was taken out by Jamie Hitchcock, from Whangarei.
The Mixed Division One winner was Jacob Turner and Mixed Division Two was secured by Jordyn Chapman.