Last year I used burlap on the outside walls of the run and it worked great for limiting the wind, rain, snow, etc. This year I have a new run, max number of chickens for the coop ,and decided to cover all walls of the run with clear tarps. There is a six inch area right under the roof that wasn't tarped. So, two weeks ago, with help from my DH, we used screws and fender washers and put the tarps up. Also used a few pieces of furring strips to help hold it down. Yesterday the wind was over 40 mph. The tarps worked great. Covering all walls, except I haven't covered the doors yet, was definitely better for us. Excited and wondering how much snow will come in at the roof line when we have a blizzard. My tarps are just not clear plastic. They have 1/2 little boxes made with nylon within the plastic. Thanks to all of you who have suggested doing this.