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rbstern rbstern is offline
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First recorded activity by BoatBanter: Aug 2006
Posts: 24
Default "whale tails" or cavitation plate foils

On Feb 19, 10:48 am, Josh Assing wrote:
So, a buddy and I were talking -- he said I wasted my money on trim tabs. I
said I did not.

The conversation revolved around the use of whale tails (foils on the
cavitation plate).

I said that they could help; but would add stress to the outdrive, and if
something that simple really helped, manufactures would make their cavitation
plates larger.

What's the general opinion on them?


A number of years ago, I added one to a 17' bass boat with a 75hp
motor. The hole shot was noticiably better, lost maybe 1 mph on the
top end, The best part was remarkably lower planing speed. Didn't
notice any difference in turn performance.