My stone creations are all about balance -- be it a 50 lb. rock balanced atop a huge boulder, or 500 lbs of rough granite stone dry stacked to form my stone warriors (which can reach 6-8 feet tall). All stones have a center of gravity, the hard part is finding it. Some stones take as little as a minute to find that center, while others can take hours. It's a lesson in patience -- keep trying.