Hello,
I was hoping for some advice. I have a xpress H18b with a Evinrude 115 etec. I have a 8 inch manual jack plate and motor is 4 inches prop to pad. The boat came with a 19 pitch 3 blade prop, unsure of brand. I’m getting 5300 rpms and 47 mph then it starts slightly porpoising. Any help on best prop for this set up would be greatly appreciated.