I have a 1968 9.5 johnson<br /><br />Do you recommend the general use prop or the light duty prop? I have a 14ft V-bottom aluminum that I use for fishing quite a bit (3 people max) and duck hunting occasionally.<br /><br />I can see getting the general use prop for duck hunting but I wonder how much more speed the light duty prop would give me. It would be nice to have any extra speed when fishing. But we really load it with gear for duck hunting. Is there any adverse affect on the motor in general if a light duy prop is used for a big load? Or is it just a performace issue?