My pool store told me that he thought it was better to just maintain the pool through the winter instead of spending the money on a cover every year and the winterizing chemicals. He said that a stable pool would not take that much in chemicals during the winter to keep it up and it would always be ready to get in when it warmed up (as opposed to having to open it and get it ready in the spring). Does anyone here have objective opinions or experience with this? We normally can swim clear into September and I winterize in October. I usually open it at the end op April or 1st of May.