Do solar covers really work? They appear to me to be heavy duty bubble wrap. I do understand that we will always lose heat through the wooden sides of our above ground pool but would love to see if a solar cover really does help heat the pool during the day. I have a 9 kW heater which costs an absolute fortune to run during the short UK summer and would appreciate any feedback or advice on how to minimise these heating costs. The other issue I have is that my wife and daughter want the water heated to 84 degrees!!!!