X2
Score the fat and smoke it fat side up.
Get a probe-type thermometer before you begin if you don't have one.
You can foil around 150 or 160 but it isn't really necessary. I have done plenty without foiling and I have done some with pans and foil, the difference will be the color and the texture of the bark. What ever you do, leave the thing alone! No peeking!
When you get around the 180-185 mark, gently try to push a toothpick into it. If there is resistance, let it cook some more. Once a toothpick goes in with little effort, it's time to remove from the smoker.
Now it needs to rest. Wrap it in new foil if you need to, place a towel or two in an ice chest, place the brisket in the towels and nest it up, cover with another towel or two and close it up. Briskets will keep for a couple of hours like this but you need to give it at least 30 minutes to an hour. Slice against the grain and angle the knife back towards the brisket while slicing. Enjoy.