This is my first big boat. Its a fixer upper and did not have a battery when I got it. I've used my truck battery the whole time I've been working on it. Now its time for one of its own. First of all can I purchase just a regular auto battey? Or do I need a marine battery ? Its got a 2.3 ford motor. Therefore its got an alternator. I looked around and I've seen marine dual purpose. So can I buy only this battery and hook up starter wires and trolling motor wires to the same battery and let the alternator do the recharging.