I had trouble keeping my cover on our 27' round pool also. Regular clips were worthless and the wrap was worse!! For the past two years I have used the "Cover Loc Jr" clips and they have been great. The wind whips through here, though probably not as serious as where you are, and these clips hang on all winter long! It's a two-piece system; one clips on the rail, wrap the cover over it and clip the second piece over the cover/clip. They recommend three per top rail between posts...I use four per rail. IF you decide to cover your pool again, you may want to try these clips. They were easy to find online.