Krej - I just changed to the Acme 543 11.5 pitch prop. I am trying to flatten the rooster/wake, because I am primarily a waterskier. But, becoming more of a Wakebord enthusiest daily. 35' off seems to work pretty good but anything longer - forget it, the rooster tail will launch ya. My RPM's are up like I say a few hundred and the engine revs higher (a real sweet purring mind you), and it seems I am getting the same top end.......weird huh? Everyone else has described the top dropping off a little with increased RPM's.
Cal - You could try Orondo River Park (private), a few miles south of Daroga 509-784-2556, they have tent on grass availability. Otherwise the State Parks - Daroga, Chelan falls........Let me know if your coming we'll set up a time to meet on the water.