I have solar heat for the pool and only use it for 3 to 4 months of the year as I find it gets the pool to warm for my enjoyment you can easily raise the temperature 5 degrees or more with solar heat for 8 months of the year.. The solar blankets are great if you like keeping the pool like bath water but they are cumbersome and unattractive. The problem with the solar rings is having the room to store them when not in use. There are some very attractive varieties available in the US unfortunately from my research they seam to only offer the low end ones here in Mexico.