When my husband leveled the ground, it was level except for minor bumps/tread from the bobcat tires, etc......When he took down the pool from the sellers house, we realized the bottom wall channel would have to be replaced so contruction is on hold until those come in. However, he went ahead and set the size braces with the buttresses. He put the end pieces (that didn't have buttresses) on 2x8x16 patio blocks. He used a rotary level and to be perfectly level the one sits up off the ground about 2-3". Here is a picture:


Is there anything easy we can do for this? He was going to put sand underneath it but from what I've read, the sand will eventually wash away and the pool will sink and become unlevel. Can we put backfill underneath it? Our soil is super hard and clay-like. Is this where we would use that crusher run or screenings that I've read about? Is there anything easy we can do for this? My husband spent millions of hours trying to get this perfectly level and we still have this and it's FRUSTRATING! Ideas anyone? Thanks so much!