Sumner's Steven Parrat and George Thomas dominated the premier division at the final round of the BP Surf Rescue series in Dunedin on Saturday.
But St Kilda claimed the overall club title at the Warrington Beach event, which doubled as the South Island IRB championships.
Parrat and Thomas won the single rescue, mass rescue and assembly rescue divisions but were thwarted in their clean-sweep attempts by St Kilda's Nick Harwood and Justin Reid, in the tube rescue.
Harwood and Reid also anchored the St Kilda team that won the open teams race, finishing ahead of Sumner and North Beach.
As expected, St Clair sisters Steph and Carla Laughton dominated the women's ranks, winning all four of their finals and relegating St Kilda, Taylors Mistake and the second St Clair crew of Stephanie Botting and Kim Martyn into the minor placings.
The Sunset Beach under-21 crew, having made the long trip down from Port Waikato, also featured, winning the under-21 tube rescue and finishing third in the assembly rescue, though there were four different winners in the highly competitive age group division.
It was a similar story in the senior division, where North Beach's Hayden Andrews and Matt Aplin won the mass rescue and assembly rescue but St Kilda's Antony Jackson and Ben Pickles and Sumner's Derek Shanks and Luke Keats also picked up titles.
St Kilda's consistency was emphasised in the overall points, as it finished 20 points clear of St Clair on 105, with North Beach third, on 56.
