Rick, Not sure about percentages but you wont bend a shaft on a Minnkota. Unbreakable (according to them) shaft with a lifetime warranty. But, believe me, they will break. I did it on a brand new Minnkota 101US. Was replaced at no cost by local shop. Ive run both and the Minnkota is WAY better in my HO. Quieter, easier on batteries and much better in the weeds. If you have a 24 volt system, the 82 lb. would be the way to go. 101 with 36 volts. I wouldnt recomend the Universal Sonar unless you just cant stand the wires strapped to you TM. They look neater but dont come with temp. sensor so you miss one important function when you look down at the fishfinder. Also, Im not sure about bolt patterns on the change over, I think the newer units have the same bolt pattern for both companies but I sure someone else will know that for sure. Otherwise you should be able to change over without much problem. BTW, not sponsored by Minnkota, just have had 5 yrs. of experience with each and Motorguide still has a long way to go to get me to go back……. Tom
