Scott is correct, there are many ways to skin that cat, if anticipating a 15 hr smoke you might foil at about 10 hrs then if you want the bark to firm back up a bit take it out of the foil for the last hour. When done, foil again and let rest.
Great Cook! Depending on which side of town you are on you can also find good tri tip at HEB, but flat iron I have only found at Kroger, and they don't have tri tip. Great area to live in to find meat, I just haven't found a one stop shop yet.
Lawrence - they don't show up here either, this is the only one I've seen on CL here and believe me it wasn't on there long.
Chris - yes, when they painted the cart they went ahead and painted the whole thing, like I said, they are great folks.
That was tater salad and yes I used water this time. I guess the plus side was that I didn't have to add charcoal or water for a 15 hour cook. I had hoped the water would take care of the moisture but it was still to dry for me. Never had that problem in an offset without water. Like I said...