Hi, I am breaking in a new opti 150 and want to buy a final prop for it. Right now I have a Tempest plus 25P and a Turbo M 24P. When I go to WOT on both props, the most RPM I turn is 5000 going 60mph GPS. I run the Tempest about 3 1/2″ under the pad and the Turbo 4″. There are alot of threads on this site about XR-6 and EFIs, not much on Optis. My desire is to run close to 65 unloaded and 60 with a load, if possible. Any thought? Has anyone run a Solas Scorpion or a Turbo Lightening? jeff