A friend of mine has it on his aluminum boat. The builder used (IIRC) 5/16"-18 flat head, stainless, machine screws with Nylock nuts.
He has a row of fasteners on each side of his boat at approx. 6" OC.
That's a lot of holes.

Nothing sticks to it and it walks quite a bit (expands/contracts).

I don't think that I would want it on a wood boat because it would trap water the same way oar tip protectors do.

The Gluvit on my aluminum boat seems to do the trick.
_________________________
NO STEP ON SNEK