In the process of testing to get that perfect performance so just ordered a Acme 1253 and Acme 1171 for testing. I dont have the pure ski boat so I know it wont be up to pure standards, but I need to find that sweet spot.
The 2008 214/X14 with MCX and 1:1 came with a 13 dia x 11 pitch 3-blade.
My 2008 X14 with LY6 and 1:1.22 came with a 13 dia x 12 pitch 3 blade. It required 4200 rpm to run at 35 mph so I figured it was the wrong prop. Saw a post on Teamtalk where someone tested 4 props on the same drive train and he recommended an Acme 1281, 13.25 dia x 15 pitch. So this prop gets me where the RPM's should be (3600 RPM @ 35MPH) but the main consensus is it seems to struggle on the hole shot. And I can feel the difference when compared to pure ski boats, and my buddies 08 214 with MCX and 1:1.
I just ran a borrowed OJ 13 dia x 14.5 4-blade and things varied a little bit but the wave seemed big.
So the new ACME 1253 (13x14) and an ACME 1171 (13x13) will help me figure out the best overall depending on pitch.
On a side note, I have been running the 1281 for two years and have asked OJ, Acme and Nettle over a year ago, the best prop, and they seem to be as confused as MC, and say the 1281 should be the best prop... We will see..