pontoon boat prop question

[oteps]

I normally don't rev it over 5000, but it will go over but doesn't seem like u gain any speed. Just sounds like its reving way to high over 5. That's pulling a tube and 5 or 6 people on the boat.
THanks for all the info. Ill go with an aluminum one and probably try to find a used on on craigs list for a spare.

[spareparts]

you need to prop it at or near the high end of the recommended rpm range. Run it wide open and see how many rpm it will turn. What year model is that engine? It should have a sticker on the tilt bracket that has the serial number on it and what the recommended rpm is

[oteps]

its a 2004, sticker says 6000 rpm.