Henderson Demolition will be trying to repeat their win in round six, at Piha on February 11.
Randle added that because there was little surf, each craft had to get off the mark quickly to perform well in the heats. Their closest rival in the 15-strong field was Smuggler Marine, who had Chris Wells and Logan Pringle on board. They experienced mechanical problems during early heats, but struck back in the final.
"Smuggler actually beat us in the final. We both got off to a very good start and they pipped us at the end," Randle said.
Henderson Demolition were second in the final, with Incon Automation third. Incon Automation won Saturday's endurance race, with Smuggler Marine second and Quin Building (Ben Cross and Mike Harman) third.