"I have a new pontoon boat 
"I have a new pontoon boat (Bennington Sedona – 20 ft) that has a 4 stroke T60 Yamaha engine. A 13.75 diameter prop with a 11” pitch produces 20 mph and 6300 RPM.
I tried a 14 diameter with 13” pitch and the speed drops to 19mph but the RPM drops to 4700.
Manufacturer recommends 5000 to 6000 RPM. I would like to find a 12 inch pitch prop that would fit the motor to come up with an RPM in the middle. Any suggestions?
Barry Kellogg
[email protected]"
"I have a new pontoon boat (Bennington Sedona – 20 ft) that has a 4 stroke T60 Yamaha engine. A 13.75 diameter prop with a 11” pitch produces 20 mph and 6300 RPM.
I tried a 14 diameter with 13” pitch and the speed drops to 19mph but the RPM drops to 4700.
Manufacturer recommends 5000 to 6000 RPM. I would like to find a 12 inch pitch prop that would fit the motor to come up with an RPM in the middle. Any suggestions?
Barry Kellogg
[email protected]"