Help! I live in NJ, which is frigid right now. My pool is leaking! It's 18ft round, 4ft deep, and covered of course. I don't really know what to do between now and spring! There is a big puddle (patch of ice actually) which looks like quite a bit of water. Do I need to keep it full to stop the sides from caving, or should I let it empty? Again... Help! Thanks in advance.

The pool must remain nearly full with water year round. It can only be lowered to the return lines for winterizing, but no lower. The walls will definitely bulge-in if the pool empties.