Update on prop... These are my numbers...
Old prop: (Yamaha 13.5 x 18 4-blade stainless) 4500 rpms = 32 mph; 5800 rpms = 48 mph; excellent hole shot, horrible cruise speed, decent top end
New prop: (Powertech 15.25 x 19 3-blade stainless) 4500 rpms = 42 mph; 5600 rpms = 52 mph; very good hole shot, excellent cruise speed, better top end
I have found my prop! It will also go 5000 rpms = 49/50 mph. It was tested with close to a normal fishing load. Thanks for all the input. Thanks to Montauk for your help also. You were correct about the increase in cruising speed. This is what I was looking for.
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