When I was recoverving from open heart surgery last Nov-Jan, a neighbor came over and 'helped' me by putting in some H posts after I had drilled the 4' deep holes with the tractor. At a gate opening, he wasn't used to being around red clay and just dropped some dirt in the bottom, tamped it some, then filled the hole 3/4 way up and tamped some more. Told him that wouldn't do in my clay beause ya can't tamp that much clay at a time and get the post to 'set' properly but he was adamant that it would, and I wasn't in any position to either dig it out or get him to. When we stretched the last of 5 wires, the post the gate attached to had came up out of the ground a few inches, making the horizontal brace take on an angle, and the gate hang at an angle. I fixed it the next day by putting in a floating brace on the post farthest away from the gate, tightening the ratchet and it forced the other post back into the ground. That post is still loose perpendicular to the run of the fence but the gate hangs straight when it's closed. I'll redig it and tamp it right..maybe..some day. It's the only H setup I've ever had move.