I ran a 25 pitch Powertech RK3 today on my 19 footer with a Suzuki. I got 60 mph at 5531 rpms, good for a 9 percent slip (2:1 gear ratio). I know the Powertech RK3 is similar to a Raker/Tempest. I also know I need to go down a couple pitches and get my rpms to around 6000.

The zukes like a higher diameter prop. I was thinking a 23 pitch Scorpion but I know those run stiff. Should I go with a 22 pitch instead? Another option is a 23 Razor XL.