Re: Batteries in Bass Buggy
Welcome aboard mk. Generally speaking I think your best bet would be to use the DC for the trolling motor and connect everything else to the main battery. This is assuming you don't have a bunch of power hogging electronics. Also, if the boat doesn't already have an onboard charger I'd strongly recommend installing one. They're not prohibitively expensive and they make your batteries last longer and your life easier.
I gather the boat is set up with a battery switch. If so, read up on them so you can learn how to operate it properly. If not, you'll have to add one if you expect to get any charging from the outboard, which brings me to the next point. How much charge you'll get from the outboard will depend on its horsepower and how long you run it at a stretch, but you won't be able to depend exclusively on it to keep your batteries charged. For that you'll need a charger, which brings me to the next point, get an onboard charger............ Oh wait, said that already.

Post up some deets about your system and you'll probably get more detailed help.
