A 4 blade of the same pitch and design would drop your RPMs slightly and give you a better hole shot...you could drop an inch in pitch too and you should still be in the upper part of the recommended RPM range. Changing prop styles and doing the above usually changes more things than you expect. Expect your top end to drop slightly too....can't have your cake and eat it. To get more bite and keep or increase speed it takes more ponies or boat/load changes.
You might plane a little quicker with a 4 blade, like of like in pitch to the 3 blade..but you’ll sacrifice top end and fuel efficiency (if that matters at all).
A 4 blade of the same pitch and design would drop your RPMs slightly and give you a better hole shot...you could drop an inch in pitch too and you should still be in the upper part of the recommended RPM range. Changing prop styles and doing the above usually changes more things than you expect. Expect your top end to drop slightly too....can't have your cake and eat it. To get more bite and keep or increase speed it takes more ponies or boat/load changes.
What pitch is the prop that you are using now?-----And is the motor well maintained?-----You need a new water pump impeller in that motor about every 5 years.----Or test the hot / overheat horn , if control box has one.
5500-6000 is a wide range, what is the actual rpm at wot on the motor when running ?? Then what is the max recomended rpm of the motor ? Then actual pitch and dia of current prop ?? Is the motor running at peak power ? How loaded is the boat ?? You need to look at all things that could affect your performance.
