I tried making a fake boulder the other day. The results were not good. I use a hole dug in the shape I wanted for a form. The form was great but it was too heavy, and too thin in some places and when we took it out of the ground it broke. I looked at the local store for quikwall but they did not have it. Is there another product I can use that will make it light weight enough to lift out of the ground? The putting it in the ground was nice as well because some dirt stuck in it enough to add color. It did not how ever stick to the ground. I really need a fake rock to cover some septic pipes in the yard. Advise please.