Park started off shaky and Seamer took advantage, scoring after seven minutes after good work down the right and a well-taken volleyed goal.
Seamer extended their lead three minutes later as a scramble in the box led to the ball going in off of the underside of the bar.
But Fishburn started to wake up and started to dominate the midfield with Lane, Brennan, Wilson and Ellison getting stuck in and creating chances for the two forwards.
On 34 minutes, Fishburn got a goal back when Brennan's corner found Belchamber at the back post who powered his header into the net.
Fishburn started searching for an equaliser and piled the pressure on all the way to the half-time whistle.
The second half kicked off and both teams started well both counter-attacking each other.
From out of nowhere five minutes in, Hewison lobbed the away keeper from 40 yards to pull Park level.
Park could have gone ahead two minutes later as Ellison shot over his head and just wide of the post.
Seamer then started to slow things down which unsettled Park and keeper Nedley was called into action, saving well down to his right after a snap shot from Seamer.
Wilson hit the Bar on 75 minutes after good work by Belchamber on the right.
Five minutes from time a through ball by Jacques-Hale fell to Park hot shot Belchamber who made no mistake in bagging his 37th of the season.
It was a strong comeback from Fishburn in a great end to the league season.
Man of the match: Shane Belchamber – excellent up front and deserved his two goals.
Result: Fishburn Park U16s 3 Seamer 2