[sailcat]

Do you have a propeller dealer where you are. Not West Marine but a buisness that only deals in props? Ask them.
I went through 3 props on mine till I got the right one.
You can usually get them to lend you a prop. Remember if you ding it you bought it.
14X17 SS Rapture sounds about right. And like Seafari says you may need to jack it up.