Propeller specifications and recommendations have been developed to give MotorGuide Trolling Motor users a basic guideline for enhancements with the purpose of increasing trolling motor performance for the applications they most often encounter. Every prop has trade-offs, just like rigging-out a big-engine you need the right prop for the situation. The good news is there are only 2 sizes of MotorGuide propeller hubs, 3" and 31/2" diameter.
