Monday one of the other boat owners at Harbor Master marina, Lake Whitney TX informed me that the marina manager said that it is not legal to leave a boat connected to shore power if the boat is not at a covered dock.The marina does provide 30A 125V receptacles at the uncovered docks used by sailors, but the marina policy is that they be unplugged when a craft is not attended.I was a little surprised to learn such. Does this check out?