another option
There is another way. You can get either a single or dual battery charger marine grade to permanently install with a floating charge so that when the battery or batteries are fully charged, it will stop charging. You of course will need to hook it up for an ac plug in with a regular chord. Marinco has a black AC power inlet that will fit a regular power chord that you would use at home. I would install that in the cockpit and then run maine grade wire 12-3 between that and the battery charger. Remember that on AC systems or regular hosehold current, black is hot and white is neutral and green is ground. On DC systems, black is ground but on the newer Hunters, yellow is ground. Crazy Dave Condon