Here are my results/thoughts:
I started with an 11.25 Lb brisket from Sam's Club. At $34 for the whole thing this cost me about the same as a 5-6 Lb already trimmed brisket from the grocery store and I had about a dozen adults and a couple of kids to feed. I easily trimmed a Lb of fat off, maybe 2 Lbs.
I doubled Myron Mixon's rub recipe quantities. (For those reading that don't know Myron Mixon is an 11 time national BBQ champion.) In hindsight I think this was too much. It was either that or the bacon on top of/in contact with the meat that I could notice the salt. I think I'm a little sensitive to certain things after my stomach surgery a few years ago since everyone else raved about it. Only one other person sai anything and that was only after I mentioned it. A kind of "now that you mention it" thing. Still wasn't too salty; I just think I can do better.
The rub recipe:
1/2 Cup Kosher Salt
2 Tablespoons Coarsely Ground Black Pepper
1 Teaspoon Sugar
1 Teaspoon Garlic Powder
1 Teaspoon Granulated Dried Onion
1/2 Teaspoon Chipotle Pepper Powder
1/2 Teaspoon Chile Powder
As stated I doubled that. Also I subbed achiote powder for the chipotle powder which seemed to work well.
The brisket was allowed to come up to room temperature before placing in smoker. Once at room temperature and rubbed with seasoning the brisket and bacon was place in a Masterbuilt electric smoker over a mix of 50/50 apple/cherry wood chips. I set the temperature to 225 F, the time for 4 hours, and left to do some off roading with family and friends. The brisket was fat side down, or towards the heat.
We returned probably just over 5 hours later. The smoker had turned off and the brisket was reading an internal temperature of 155 F.
Here's where I get lazy. I probably should have wrapped the brisket in foil or butcher paper and the proceeded. As it was, I was working on my second Bourbon and anxious to hop in the pool so I just cranked the temp up to 245F and removed the brisket when it hit an internal tamp of 180 F. It was removed from the smoker, placed on a baking sheet, covered in foil, and let site for about 30 minutes.
Upon slicing the thinner end (about 1.5-2" thick) was still moist but dry for what I think a brisket should be. The thicker end (closer to 4" thick) was spot on moist. Both ends were tasty as heck though. This is where, I think, wrapping at 150 F and then continuing on to 180F (plus a longer rest) would help the moisture levels. Next time I'll give it a shot.
Also, I think the liquid in the drip pan prevents a proper bark from forming but I can't be sure. Maybe less liquid next time so it steams for only the first half of the cooking time?
All in all it was a good improvement from what I had been doing. Now I just need to work on evening out the moisture and developing a presentation quality bark. The flavor was definitely there.