I purchased a new 22.5" WSM with some Christmas cash. I've fired it up once to burn off the factory residue and season it a little. This weekend I'm planning on cooking a few racks of ribs for the Superbowl. The forecast is cold (about 20 degrees) this Sunday. Any tips on keeping it warm? I'm planning on cooking in a place that is out of the wind, but I'm not sure what to expect for temperatures in my smoker. Has anyone else tried their WSM in the cold? Will it work? Tips?