Turner grabbed second with Manly Surf n Slide (Ben Bianco) third.
KMC completed the double, taking handicap honours from Sutech and Lee Sails (Sarah Lee).
“With close to 30 starters at Manly every week, the competition has really stepped up and that’s great for us,” Grech said.
“We have a long way to go but hopefully we can carry some of this form into the states this weekend and them on to the nationals.”
Manly will host the third and fourth heats of the NSW 16ft Championships across the weekend.