I want to thank everyone for all the great info on HH briskets on the WSM. I cooked two 8lb flats yesterday on my 22" and they took 5 hours total. I was nervous the entire time!! At two hours I pulled out the temp probes, foiled, put back on at 350 lid temp and started checking for probe tenderness at 90 minutes then every 30 minutes after that. At 4.5 hours they were almost done and I took them out of the foil and put them back on to firm up the bark. I then refoiled and put in a cooler for a trip to a Packer-Viking game party. 2 hours later they were gone as fast as I could slice them and were the best briskets I have ever made! (sorry, no pic's, too nervous to even think about it at the time!)