Most of our club boats have sat in the boatyards for 2 seasons now as we ride out the drought. I refreshed the freshwater engine intake with new antifreeze a couple weeks ago just to be on the safe side. The heat pump AC is untouched since the first winterization. The freshwater is empty. The head was winterized. Should I revisit anything to be sure everything is safe? Sails are in the garage. Batteries are AGM and on a Sterling Pro Charge Ultra charger