Dan,
Simply amazing!!!! Today is my first time to this "chat area" on this website and its BLOWING MY MIND AWAY with some of the ill informed suggestions that are coming your way!!!...Be very careful!!! Regarding the following.....No strap ovals, Expandable liners, Burying an AG pool (and voiding the warranty) and doing all of thesae things without "going outside of the Manufacturers specifications"....you only have one choice...DOUGHBOY. GO to website and find out for yourself. THe support is there for you to get all of these answers.. If you need , contact me personally.