I am in PA and we get a good bit of freezing weather each winter. We built both of our runs "floating", by making 4' wide frames (to fit the width of the wire) and screwing them together. Each frame is built to fit the slope of the land. We do have a wire skirt on the outside bottom, wire on top of the small run and aviary netting on the larger one. The tops are supported by cross boards and some support posts on dek blocks. Digging post holes was out of the question due to the extremely rocky ground we have.