I bought this in Spring, hoping we could warm up the pool for some visitors. We live in So Cal and the daytime temps were 75-80. Nights were 60-65. Pool temp was 65. In five days with the pool cover, water temps were 77 and everyone was swimming!It was easy to trim to size, even with our almond shaped pool. We cut it in half so it is easier to take off. At full length, it was a hassle to fold it up and pull it out, even with two people. Our pool fence and pool shape prevents us from buying a rolling device.Just be careful with algae. Both me and a friend ended up with algae after two weeks with the cover on. I think it's probably due to the spike in temps without careful balance of chemicals. This is tricky because our pool guy recommended taking off the cover for two days after adding chlorine. But that reduces the benefits of heating. Good luck with that part!
Rating: [5 of 5 Stars!]