Back in "the day" 16' boats were the norm and trolling motors did good to break 45# of thrust and worked well. Then bigger boats and "bigger is better" came about and the thinking is if you can haul enough battereis, get the biggest you can. Truth is, you can't have too much trolling motor. I ran a 45#, a 54#, a 65#, and a 80# on an older Basscat Caracal (17' boat) for years and with each change, I could see the difference. That being said, I have a buddy with a 70# on a 19' ProGator that moves the boat plenty good, even in the wind. On your boat, I would look for at least a 24V, 70 or 80#, variable speed trollingmotor. Hope this helps.