Who can help me choose winter cover? Pool temp @87 won't be closing til late Sept. But want to get one now to have when ready. Winters in Chicago can be brutal. First time closer and yes I have read winter closing article. Do I need a pump for the cover? Anyone tried the EZ drain covers? Also is there any special component to be added when winterizing to protect liner? Or just slam and cover? Does anti freeze need to be added to flex hose or just water to be drained and blown out of lines? Do they need to come off or left attached?