I have a Minn Kota Edge 55 on my 17 1/2' Alumacraft. The motor has the Wedge 2 on it which has "ears" at the tip of each blade. Would there be a difference in thrust if I switched to the MKP-37 prop, one without the "ears"? On the Edge the lower speeds(1-4)have normal differences in speed or power but when turned to 5 there's a huge difference. I'm just wondering if the straight blade prop might move the boat a little better on the lower speeds. It gets pretty wild on 5. I hope this question makes sense. Thanks.