I dig a relatively even hole about six inches deep, 17 inches long, and 24 inches wide. On that I apply leveling sand, and if there are trees nearby I will spread a layer of cement. Ontop of the sand I peice of treated plywood, then bricks, and finally the two cinder blocks that actually hold up the colony. I've found it to work pretty well. So far it hasn't sagged in any direction by 1 degree! However, it's not very portable...