I trimmed the brisket and put it on the WSM at ~350 degrees. I decided to use apple wood chunks for smoke flavor. I had to open the side door periodically to keep the temps that high because it kept wanting to drift to the mid 200s. When it hit 155 degrees, I wrapped it in foil and continued cooking until it hit 195.
The brisket had a good flavor and was moist. The smoke flavor from the apple was very mild, so I'll probably go back to hickory or pecan. But, I think I have found the new way to do briskets. It took ~2 hours to get to 155 and 2 more hours to hit 195, for a total of 4 hours to cook. I like that. I put the brisket on right before breakfast and had chopped beef sandwiches for lunch.