Are they 3 or 4 blade props?
Yamaha boat, Yamaha motor, Yamaha Reliance Prop. Boat originally had a 18 pitch but the RPMs loaded was only around 5300. I'm running around 5500 now with a 17 pitch prop. Boat is very heavy but very stable.
3 blade
I still have it, I want to keep it since I think the boat can turn it with a lighter battery load. I’m running (4) group 27 deep cycle AGM batteries at the moment.
I will.
What kind of speed and RPMs you getting with this rig including prop size?