Wind and WSM definitely don't go together. I have a garden cart the fits nicely around the WSM when I tip it up on end. It works quite well. Three 24" x 48" pieces of luaun plywood duct taped together would be about the same. Just set them up 3" or 4" away from the cooker. If you are monitoring temp with the lid thermometer, it will be way off (temp at the grate will be higher than you think).