I need some advice guys. I have a 24 ft pontoon boat that I want to add a trolling motor to. It will be used for fishing as well as an alternate source of power in case my 70 hp Johnson happens to quite on me out on the lake or the river. I want something to get me back to shore. I have an oppertunity to buy a good used Minn Kota 55# thrust 12V with the flexable shaft still under warranty from a good friend but would like to know it is is big enough. The shaft length is 48 inches & it comes with remote control. Any advice will be appreciated. I HAD to PADDLE this boat once upon a time & it nearly gave this old man a heart attack getting it to the dock. I can't do that anymore for any reason now.