I have mine at 1 hole up, 17 Enertia, 2574 GLI. Digital trim varies 3 or 4 depending on load. Fastest with 2 people is trim at 3, 6600 rpm, 54 mph. I need to add some pitch, but not sure which prop I might want to try. The Enertia does real well and I tried an 18 in the past but it didn't do much.