Re: Best Battery choice. Noob needs advise
If you have no lights, radio you'll be using with the motor off, just a cranking amp battery would be fine. You don't need a deep cycle for just cranking amps to start your motor. I went with a deep cycle as we monitor the the marine radio, listen to the stereo, cabin lights and anchor light when not running the motor. But even that is an overkill. Always better to error on the safe side.. kind of hard to get a jump start on the water ways.
I'm not sure how many cranking amps it takes to wheel over a 40HP motor though.