I'm getting ready to close my 24' round Johnny Weismuller pool. I've had this pool for28 years and I still haven't figured out the answer to this. The JW pools have a walkaround deck and fencing that can't be removed for the winter, so I can't wrap the winter cover over the edge of the pool and secure it. I've used a 24' winter cover and a 27' winter cover and almost every year, I have to replace the cover because the grommets get ripped out. When I open the pool, there's only about 18" of water in the pool. Why am I losing so much water which always results in the cover getting ripped up? I keep a pump on top of the cover but with our cold snowy winters, it doesn't run most of the time. Any suggestions? Thanks for any help you can offer!