I was wondering, I have the opportunity to pick up a 36v 81 pound trolling motor for 100.00..However, I just don't have the room to put a third battery in the rear of my boat...Now I have seen trolling motors that switches from 12 to 24 to 36...is it possible to run this motor this motor like I would a 24v...meaning can cut a wire or put a switch on it or something