I am getting ready to have my new hydropool 738 delivered but I am stuck in a small delma. First I am placing my tub in the back yard, the yard is not completely flat (it's about 4inches lower on one side) I have gotten a over the phone quote for concrete 980.00 I think this is way too much so I was thinking of going with either 6x6's and leveling them off or the ezpad and leveling the ground off. any suggestions please help. I also was looking for the ezpad web site but could not find it. thanks for helping