Please do not surf behind an I/O or outboard. Consider the propeller placement on an inboard as a kind of necessary safety equipement.
I bet you can network on WW's find a 3rd be a 3rd and find someone with an inboard that is looking for another surfer. If you're ever in that states near central Ohio I'd be happy to have you on board.
Larry Mann at Trick Boardz has an informative wakesurfing web site. Please take a look.
http://www.howtowakesurf.com/