Sorry to burst your bubble, but I tried those in GA and they didn't work very well. In addition to not working to lower the temp of the pool, they stop your water from circulating properly, and get in the way when you swim.
I solved my temp problem by installing 4x6 posts and attaching shade sails over the pool. That reduced my water temp by 5-10 degrees depending on if I put up 1 or 2 large (16x24) shade sails. It also provided shade!