Gentleman (and the rest of you):

Is there a way to "ventilate" (deliberately cause cavitation on plane off) of a non-thru hub prop? I know how easy it is to leak exhaust through the prop hub on thru-hub exhaust type props and get the rpms up, but I don't have one of those--I run a Mark 55 type LU set up.

As many of us have experienced, the prop we need for top speed has too much pitch to get the boat on plane without a struggle. Like to change all that.

Thanks,

Jeff

PS: My ocean racing buddy had the same problem; even with over 3,000 hp (twin, blown Rat Motors) he could not get is boat on plane without ventilating the props.