I have a 1468 Lowe v Hull and a 1998 25 hp mercury 2 stroke. The transom on my boat is 20” the shaft on the Mercury is 19.5, which puts the cavitation plate about 1/2 inch above the bottom of the boat. The standard 13 pitch prop that came with the motor does not seem to like this as I experience blowout when I accelerate, just before it planes, also in the chop if the waves get very big. At full throttle with a full load I’m running 25 mph and 5600 rpm. Im wondering if getting a prop that’s happy a little closer to the surface wouldn’t be the best solution to this problem? What would you suggest?