The unhinged barrel idea in that link is genius imo. I always cut the bottom out of my burn barrels anyway...There's nothing WSM related you can think of that I've not already written about on The Virtual Weber Bullet over the past 25 years, including various wind breaks and enclosures.
Cooking In The Wind, Rain & Cold - The Virtual Weber Bullet
Cold weather operating tips for the Weber Smokey Mountain Cooker, including the use of wind screens and enclosures, plus tips on cooking in the rain.www.virtualweberbullet.com