I just purchased my liner from INYO. Its an above ground 15x30 pool. I am installing the liner myself. But a local pool installer that I talked to gave me some advice and I'm not sure if it's a good idea or a bad one, hopefully you can tip me to one side or the other. The advice was to place a 15x30 solar cover down first, above the leveled sand prior to laying the liner down. To provide for a softer floor and as a liner protector. What is your opinion? Thanks so much in advance.