2016 FX 20 250 SHO, boat has hit 73.7 in the summer with just me. Regularly hits 70-71 two guys tournament loaded. I can only get about 62 with Two guys and tournament load now. Prop is 26 VMAX t-2. This prop hit 73.7.
Two things I think could be the issue. I put a vented cover on it that could restrict air flow maybe? Or I have put 89 vice 91 Octane? Prop looks fine BTW.
Any ideas or thoughts?
Many thanks