Prop question

I have an older Johnson trolling motor on my Lowe 17ft boat. Would changing the prop on the trolling motor make it more efficient or powerful? Right now it has the old 2-blade prop. The prop is in good condition, I would just like to get more thrust out of the motor.

I doubt that you would even notice any difference. Some claim they notice a difference when using the 3 bladed prop but I didn't.