[Rainmaker]

I need to pick up a spare prop for my eTEC 225HP. I figure at the same time I should try to get it right at this point. I have been running the boat for a few year and the one I have is close but not quick enough to get on plane. Curently it takes me close to 9 seconds to get up on a slide. I need to cut that back a bit if possible.

I took the boat out and charted a few RPM points today:
@ WOT I run 5600-5700 RPM 22.5GPH and 41mph on the GPS
@ 400RPM 10.2GPH 24.5mph
@ 3000RPM 7.5 GPH 9.8MPH but not on a plane

I am currently running a 3 blade SS Viper prop (I had a little bit of cup added though) the prop is 14.75/17P

I am considering going with a 4 blade in the same size but I am not sure if that will solve my planing issue or if I should go down in pitch if I go to the 4 blade. I am thinking the added cup and the 4th blade may be a wash.

Any advice on what to change to? What will that do to my top end?

Any of the prop gurus on the board have some suggestions?