I was told some people on here may have some high altitude prop experience.
My boat 1994 American skier TBX, 350-260hp, max rpm 4400-4800.
Stock prop 13x13 OJ gets me 42mph @4300rpm
Bought a Acme 541 13X12 gets me 41-42 @4200rpm
Im considering the 1609 or the 913. I slalom 60% and barefoot 40%. I dont want to completely loose my slalom pull but am willing to sacrifice it a bit to get a couple more mph for footing.
I posted on here because I was told there may be more high altitude guys on here.
Oh Btw im in denver @5280'