Draining water heater, put anode back in or not?

When we're not using our camper and drain the water heater I leave my anode tube out. I made a vent plug with a fine screen to keep out bugs. It's a plastic fitting with proper size threads on one end and a nipple for rubber hose on the other. I wrapped the nipple end with screening which is held in place with a hose clamp. That allows the tank to dry. Even when you drain the tank a bit of water remains. I prefer to let the tank dry so that water doesn't sit in the bottom of the tank.