floor

Can anyone provide me a link with where to buy the Gorilla pad? I have seem more than one manufacturer listed and I want to make sure I'm getting the one that everyone talks about. Alternatively, I thought I read that the Gorilla pad was a seamless, one piece bottom, but reviews I've read...

There are bushes and a small tree in the area where I want to install my 18' above ground pool. Will it be OK if I back fill the holes and compact them? I'm going to rent a compactor to do this. Also are the floor pads worth it or is sand good enough?