Have a 70#, 24V booster trolling motor mounted on transom. 70# 24 v remote control mounted on bow. Two batteries are in the stern and two are in the bow area. Everything is OK when I'm have someone in the back of the boat or I set back there and use the remote. What I would like to have is a cut off switch mounted in the bow. Would prefer the smallest and efficient switch possible. Trolling motors have cut off switches installed so looks like a small switch could be used. Need advice.