My plan for leveling the ground is to buy 4x6x10’s and make a 20x30 frame and fill it with 1/4- gravel. I’ll have the frame level and square and compact the gravel, the ground in the backyard is rock hard so I feel this would be solid enough for the pool weight and a clean look after pool is up. My thinking is it would be easy to build a deck around pool as well. My other question is how far out do the supports come out from the bottom edge of pool so I can make sure to make my gravel “pad” big enough to accommodate with the added width of the supports. Any advice will be appreciated!