Jawz

I have a 20" W/A (Proline), 2005 150hp Mercury Optimax, the prop was on the boat when we purchased last year - the prop is a 17". By reviewing the manuf (Mercury) recommended operating range vs. the actual RPM at full open, I can adjust accordingly?

I ask this, I seen a similar sized boat w/ the identical motor and it housed a 19" prop.