Procrastination has resulted in losing three possible C-dorys. One of my problems is that the boat would wind up in Fl for the Winter. We are "up North" for about 6 months a year and the boat would be on the trailer at a marina in FL. How do I keep the batteries charged? Remove them and put them on a charger system in FL. Have the marina charge them periodically? Any suggestions? Also, would a cockpit cover keep water out or would I have to have the boat shrink wrapped?