So I just recently bought a used Hewescraft 220 Ocean Pro with Hardtop and Extended Transom. The boat came with a 150hp Honda for a main motor. Honda doesn't have a performance report for a 150hp on an OP but Yamaha does. According to the performance report, a Yamaha 150hp should have its best cruise at 21mph and top speed of close to 42mph. My honda tops out at just under 30mph and I can't figure best cruise, but it seems to be around 20-24mph. The Honda performance report is just for a Sea Runner and not an OP. It says its best cruise is about 17mph and tops out at 35mph.
Now the Yamaha uses a 14.25 x 17 prop while my honda and the report uses a 15.25 x 15 prop. I am somewhat dissappointed with my performance and would like to see about getting it up closer to the Yamaha. My first thought is to put on a prop similar to the Yamaha. I just can't see a Honda doing that much worse than a Yamaha but maybe I'm wrong. Does anyone have any ideas or any experience with Honda on an OP.
Any help would be hugely appreciated.