re: Questions on my Xpress H22 setup

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good grip with aggressive cupping and high rake.

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This sounds like it is directly off the powertec website. Of course they say this about their prop. You get a prop with real cupping and larger blades your rpms will decrease.

You said you did 6100 with light load and 2 people. You put 3-4 people and heavier load then you will be at 5500

You may be able to swing a 21 pro series. I'd go to a 19 if you go with a 4 blade.

The right way to determine is with your average fishing load and average people on board make a few runs. Document your prop to pad, max rpms and speed. Then you will know what pitch to run. Since every prop varies you will have some unknowns but you can get it pretty close.
- give me your prop to pad measurement for the speed and rpms you gave and I can let you know more.

I've noticed with ptec props is that you get lots of slip. So you turn the prop really fast but it's not gripping the water. When you grip it will reduce your rpms due to friction and propulsion.
Your numbers give me 14% slip. That's high. I'm getting 6% on my bay boat and had my h20b down to 6%

Email me at seapickle09@gmail.com and we can get you set up