The Superoos, who had earlier won the league’s Minor Premiership, took out the Grand Final 18-14 after a titanic battle against local rivals Kiama Knights.
The game went right down to the wire, with the clinching try coming through Jamberoo centre Trent Ryan in the 71st minute.
The Knights jumped out of the blocks and raced to an 8-0 lead in better than even time, with wingers Jay Delaney and Cam Cornell crossing, while Jamberoo lost vice-captain and hooker James Asquith with an ankle injury in just the fifth minute in a major injury blow.
However the Superoos hit back with two tries of their own through Trent Ryan and five-eighth Josh Kent, which were both converted by Dean Watling to see their side take a 12-8 lead.
But not to be denied, Knights captain Kieran Poole snatched the head back when his try was converted by half Dean Vassoler and that tenuous 14-12 lead remained until Ryan’s late try sealed the game.
Josh Kent was a well-deserved Man of the Match and was well supported by Aaron Grigg, replacement hooker Jade Tooth, Mark Asquith and captain-coach Jono Dallas, while Cameron Whittaker, Cam Cornell and Josh Toohey were best for the Knights.
The First Grade loss was the only downside for the Knights as they defeated Gerringong Lions 20-4 to win Reserve Grade and won the Ladies League Tag 20-16 over Milton-Ulladulla.