Hi, we currently have an intex 16 x 48 but we are upgrading to the 22 x 52 intex. I have learned the hard way not build up to level the yard. We will hire a contractor and he will use a Bobcat. From other posts I see some putting down a Styrofoam board for cushion and stability. If I decide to go that route would I put that down first or would I use sand and then the board? What is the best type of cushion to buy? In my current pool the bottom is filled with dips and you can still manipulate the sand with your foot and it is off about 5 inches on one side and that is what I am trying to avoid this time around. Can anyone please guide me as to what are the proper steps after the contractor levels the ground. Is sand needed or should I use something else and how much should I use? The contractor said he would compact the sand and last time we used a tamper should I use a compactor plate? Do I need to let the ground sit for a while or can we install the pool the same day as the leveling?Thank you so much in advance for any advice!!