I use a Rhino to move my 12x20 coop. Its kinda like a chicken tractor. Mine looks like a greenhouse and the skids are 2x20 salt treated with flooring stapled to the bottom to slide easier. The hoops are 1" fence conduit from lowes bend from a jig I made, with chicken wire all around it. the back end is plywood with buckets for nest accessible from the outside. The 2x4 roosts are running from bow to bow about 2.5 feet high and again at 4 feet high which adds stability to the hoops . The hoops are 4 ft apart and 3/4's of them are covered with 1/2" plywood and galvanized metal flashing . I have a floor build in mine from 1/2 welded wire thats 2 foot off the ground. at the 16th bow its a plywood wall with a automatic coop door. The last hoop is chicken wire around a homemade door. This set up works great for me, I run 50-75 buff orpingtons. On rainy days sometime they won't leave the coop, but have a 12x16 space of ground under the floor to graze and frolic on with protection. I have the outside fenced with a hot wire and a solar controller for nite time protection.