I will be storing my trailer for 9 months in Florida (no possibility of water freezing) and need to know the best way to lay-up the hot water heater tank. Tank is a 6 gln Atwood (aluminum) and I have an anode corrosion rod (magnesium). Should I: a) Leave the tank completely full of water, with anode rod installed. b) Completely empty the tank (as best as possible) and leave the anode rod installed. (or leave the drain connection open, with no adode rod). c) Some other procedure. Any help would be appreciated, JohnnyP.