I have been asked to smoke (2) 10-12 lb briskets for a gathering in a couple of weeks. I've always had pretty decent luck smoking a single brisket in my WSM but have never attempted 2 at the same time. I usually allow 55 minutes per pound with a 2 hr rest time at the end for a single, what should I allow for cook times on 2? Any advice and tips are appreciated! Thanks!