The Rotorua visitors clawed their way back into the game with goals to Jack Tombleson and Duncan Nixon, to tie the game up 3-3 at quarter time.
John Paul College were forced to play catch up for most of the game, and went into the final quarter trailing 5-4.
John Paul's tall goal keeper Peter Chapman was called upon to make some fine saves as Hamilton searched for another goal to build a buffer. After a time out, the Rotorua team re-grouped and Tombleson equalised to draw level 5-5.
Tony Chapman came off the bench and broke the deadlock with 55 seconds remaining, which saw John Paul College take the lead for the first time in the match.
They held onto the lead in the final period to take the title and go through the tournament unbeaten for the first time.
In the semifinal stage, John Paul College played perhaps their best game of the tournament to dismantle Long Bay College 11-1. Tombleson was awarded the most valuable player award for the tournament.