I'm going to put an agp on a slope. I had a pad dug out last summer so all the dirt would be settled and packed by this spring, but I just realized we went about 6" too deep . I know the pool is supposed to be installed on hard ground, so I was thinking about adding back about 6" of chert, which packs very hard and quick. I'm about 1 1/2 months away from install so it will be settled by then, and I'll pack it when we level it. And since I'm going up all the way around and not just on one side, I don't see any problems with this. Any opinions?