I used to take a five gallon bucket and put over the charger on the floor of the buggy. I would put the charger on four bricks, then the bucket would go on two bricks to raise it up and let the charger breathe. Then I put one brick on top of the bucket so it wouldn't blow over.
After doing that for one season, I decided to put a hole in the side of my shed and leave the charger plugged in inside the shed and run the charge cord out the hole and plug it in.
I put a hook on the outside of the shed to hang the charge cord on when it's not plugged into the buggy.
That way it's less work and my charger won't grow legs...
Have one of these for the hole in the shed:
