I have an above the ground 18' oval pool. I am looking to use a solar cover. I have seen on this site home made stands for the reels. I want my wife to be able to crank the cover off and on by herself seeing I am not always here. I am thinking about buying a reel and placing it at the end of the pool. Should I buy one that is larger then 18' and cut to fit or buy the 18' one. I believe I am not the only one with this issue?