Definitely agree with the last post. I have a 14 ft Crestliner with a 55. It is plenty powerful and I like having just one battery. Actually the one trolling battery is enough to run my trolling motor, electronics, and kick over the tiller. The spot lock is one of the greatest features created. It will hold the boat within 10 ft of the spot, when I have been in 3 ft waves. It all depends on the wind. If you have steady wind it will hold right there. If the wind is shifting, it will wonder just a bit to compensate for the different wind directions. Here is the one thing I don’t like about the spot lock. I am sure there is something I can change to avoid this. When I am trolling a little faster and get a fish, I will hit the spot lock button. The boat almost immediately whips a 360 to get back to the spot. In a small boat you have to be careful because if you don’t expect it, you would not want to be standing up at the time.