My 25ZX w/ a 502 mpi came with a 23P Mirage Plus 3 blade prop. At WOT the boat is running around 5100rpm. Is that to high? The boat is topping out right around 63mph on the GPS, but it feels like it should have a little more speed if I throw a more prop at her? I know that I should not be expecting to see 70mph out of a stock 25ZX, but considering my buddies boats all seem to run in the high 60's to low 70's, I want to get as much top end out of this boat as possible. I was considering trying a 23p 4 Blade, but I don't want to put any more drag in the water if I don't need too.
Any suggestions on this? Is 5100 RPM to high, or is that where it should be?
Also, is there any benifits of running a labbed prop on a sub 70mph boat?