From all the reading i have done i have not come up with a solution on how to properly winterize my 18'x48" Intex. I've read some people don't drain water and just plug the holes, some drain water below lowest hole. And with covers i know i can't use a conventional since the frame can't support it. I live in Pittsburgh so we can have really nasty winters and then on occasion we have mild winters like last year. If i drain the water to half way and don't use a cover or pillow would that be good enough? Next year i will be draining all the water to fix a few legs and move some pavers so i am not really concerned what kind of condition the water is in, and i also have no trees anywhere near me to worry about leaves or other debris. Would the water freezing cause any damage to the liner or frame since i won't have a pillow? Could i use a pillow with no cover and just anchor it down somehow to give the ice somewhere to expand? My pool is a salt pool, i am assuming that once the temps get into the teens that the water would still freeze. I also have the sand filter, how do i properly winterize that? Is it just as simple as drain the water from it, take the valve into the house and cover the top with a bag?