I have an '02 21ft.Party Barge (Pontoon) with an '02 Yamaha 50 w/oil injection. It came with an aluminum prop. I would like to get a stainless steel prop since I know it's just a matter of time before I hit a stump. What size should I get? I'm looking on Ebay but don't know what to look for. Help!<br />billt23
