Harbour won the Bandy Scoles Memorial Trophy for the 34th time when it beat Zingari-Richmond at Montecillo.
Harbour dominated the game in all phases and was able to penetrate the flimsy Zingari-Richmond defence to score 11 tries in a sparkling display of attacking rugby.
The first try was scored by wing George Folau after just 90 seconds and the game was sealed after 15 minutes when Harbour had scored three tries and led 19-0.
Harbour scored seven tries in the first spell to lead 43-12 at the break and added four more in the second spell.
Folau displayed power and strength and centre Wayne Gibson was unstoppable with the ball in hand.
Flanker Eben Joubert also scored two tries and impressed with his strength and speed at the breakdown that produced numerous turnovers.
Ryan Olsen and Pete Mirrielees were strong in the front row.
No 8 Chris Bell and prop Jeremy Bekhuis were the only Zingari players to come out of the game with credit.
Harbour 69 (George Folau 2, Wayne Gibson 2, Enoka Tauafua 2, Eben Joubert 2, James White, Pete Mirrielees, Jonnie Hughes tries; Craig Sneddon 7 con), Zingari-Richmond 19 (Steve Roberts, Chris Bell, Jeremy Bekhuis tries; Ben Bradley 2 con).
Halftime: Harbour 43-19.
Referee: Liam Scanlon.
