Year 9 players Devon Flanders and Jackson Ralph improved as the tournament progressed. The seniors emulated the juniors, beating Lindisfarne 15-1, NBHS 10-0, Taradale 3-2 and Havelock North High 5-2.
In the semifinal, HBHS beat NBHS 3-1. In the final, Sam Carter struck twice against St John's in the first half to ease the pressure for a 4-0 victory to clinch their maiden open title.
Captain Ryan Warren led by example with Reuben Papuni marshalling the defence while Harry Skelton created multiple turnovers.
Kaleb Jones, Liam Warren and AJ Bowden all made an impact. Both teams will compete at the nationals later this month.