It sounds like the prop worked more or less as designed... it sheds
blades when it hits stuff. For your friend's application the stainless
steel prop is the correct answer. The loss of speed is not good,
though.

Thanks for sharing the info.

RT.

tony thomas wrote:
Friend tried one on his 16' bass boat w/ 90 hp motor. He is all the time
going into shallow water and bumping (and tearing up his aluminum prop). I
told him to get a SS prop as it will hold up to the bumps. He tried the
pirhana. Lost 2 mph on top end from the aluminum prop. About the same out
of the hole as the aluminum. If he touched the bottom it would break a
blade. After about 3 times out and 3 rebuilds - he bought the SS prop
(black standard SS). It is scratched up but never had to rebuild it and got
3 mph top end over the pirhana.

--
Tony
my boats and cars at http://t.thomas.home.mchsi.com