Hi everyone! New to this forum and site, and am enjoying the information I am seeing here. My question is about foundation. Our backyard is definitely not level, and I know the most important part of putting up a pool is to make sure the base is level, so I have dug into (on the highest side 13') the ground instead of building up. It has been back-breaking work, but successful. I only have a small amount left to level. So ,our base is solid, we have a very hard red clay here in north eastern California, but I am unsure on whether to cover this with a small layer of sand, or to buy some polystyrene foam sheets to lay down. The other question is about pavers to brace the legs, do I need them, and if I do, how do incorporate them with either the sand layer or polystyrene? Thanks in advance!!