[ltdan]

DINGER, I'M NO PRO,BUT SOME HERE ARE. THAT 15"X15" SOUND'S WAY TOO SMALL. SHOULD BE TURNING A 19". MAYBE YOUR MOTOR IS TOO LOW? GO TO http//www.mercurymarine.com/prop PUT IN YOUR RIG'S INFO AND IT'LL GIVE YOU SOME SELECTION'S OF WHAT YOU SHOULD BE RUNNING. GOOD LUCK. LT DAN