I've got a 14' Sam Devlin Cackler stitch and glue boat that I use for fishing. In order to get the thing up on plane with my little 15hp Merc, I have to put the battery for the trolling motor up in the bow. To use the trolling motor, I then have to lug it back to the stern. The boat was rarely used up to this point, so it wasn't a big deal. But now, it'll be used a lot more.
The lights don't go on in my brain very fast and it's only taken me 10 years to realize that all I need is an extension cord and mount the battery under the foredeck permanently.
What gauge wire would I use? Can I just run a piece of 12-2 or 14-2 household wire or does it have to be something special?