You’re first stop (and it will probably be you last) when researching a new prop should be Jim Thelen at ACME. He will ask all the right questions to get you the prop you need. I have a 15” x 13” and it is super aggressive but will still do 32 mph. I couldn’t really imagine going with anything with less pitch than that at our 2200’ lake. As far as diameter goes, Supras can, generally speaking, run a larger prop than Moomba. I measured my clearance and a 15.5” prop would not have left enough clearance on my 2020 Mojo. My boat came with the OJ that I think they call 15.5” x 16” and it was the completely wrong prop for that boat with extra ballast. It was the same diameter as the new Acme 15” prop and too much pitch for the boat. The new prop will get the boat up on plane with full ballast but I only tried it once to see what it could do. I would never run the boat like that in normal use.

Keep in mind when choosing a prop that you don’t need a prop that can get you across the lake at 35 mph with a crew of 10 and all 5000#’s of ballast full. Most members on here high idle to their favourite surfing spot while filling and only run about 50% ballast when wakeboarding. I have heard a few members comment on how happy they are with the 13.9” pitch that they are running. I suspect that it still has lots of grunt while running a little lower rpms. I have about 4800 #’s of ballast and and 1100 #’s of crew and turn about 4100 rpm at 12 mph.

That’s my two cents. I hope you find the perfect prop and please let the forum know what you pick and how it performs. The search for the elusive perfect prop is never ending.