Quote Originally Posted by mjb929rr View Post
I’ll be honest our new sl has the 575 and it is barely adequate in Pueblo, altitude 5k feet but density altitude is 8-10k in the summer.
Quote Originally Posted by mjb929rr View Post
The old sl450 we ran a 16x13.9. 4-4300 rpms all the time with a medium crew. Our new sl we are able to run the 16x17. Usually 35-3600 rpms
Having a prop pitch of 17 deg on the new SL has gotta be holding you back, no? Even with the 575 engine.

(I'm assuming you use it for surfing primarily, rather than skiing/boarding.)