Here's the one I threw together for spearing. It works well. 4X4 green treated runners with 2X4 cross members, 3/4 " plywood floor, 2X2 construction walls, 2X4 framed door, sloped roof of 3/4" plywood, rubber sheeting on roof, drip mold all around. I can push it around with cleats on my boots to set it where I want it, but pulling it very far is a stretch. Pulls easy with a quad, but I prefer my truck. Hope this helps.