Re: Johnson 3HP 1958
HI MK22. On a motor that small, I don't think either prop would make much of a difference. If anything, I believe the 2-blade prop would be slightly more weedless than the 3-blade version, and less likely to foul on fishing lines and such. It's sort of a "six of one, half dozen of the other" sort of thing. More important, will be setting the motor to the right height on the transom to get the best performance out of it. My 3 hp Gamefisher would push me around at about 6-7 mph alone, in my flat back, aluminum canoe and pushes my 14' fishing boat around at about 5 mph as a back up/kicker motor.