This is the prop we settled on. The holes behind the blade acted like a stall converter in a race car. It would let the RPMs flash to about 2000 right out of the hole then as the exhaust was pulled out the center it would stop the air from coming out. The air running on the back side of the prop let it basically create cavitation and let the RPMs flash.

This works great to pulling skiers and getting an over loaded boat up on plane really quick.

Lifting the motor is a must after install. Because the prop ties the rear of the boat down to the water so well you can then lift the motor on the transom so the top of the prop is level with the bottom of the boat on dry land. With the prop only in the water 6-8"s finding a rock is hard to do but can be done.


[Linked Image from corvettejunkie.com]
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7/8th of an acre, Perch only pond, Ontario, Canada.