Being new and reading the many posts about the 3-2-1 method and those of you that don't foil, I decided to test the 2 methods last weekend since I was going to smoke 2 slabs. First, before I get berated ;-) about no Qview, my wife left our digital camera at school. Did not know this until I started. Anyway I thought I would still share. I used a rub similar to Jeff's. However I decided to add chipotle powder to the rub this time. If you don't use chipotle powder in your rubs you might experiment with it. It adds a nice smokey flavor and a little kick to the rub. I placed both slabs in the smoker at a temp. of 240. I tried to maintain this temp throughout the smoke which I'm still trying to master. I guess I need to mention that I'm using a Yoder 20" offset smoker for the test. After 3 hrs I took one slab out and foiled it leaving the other on the grate. I added a little apple juice to the foiled ribs an place them back into the smoker. After 2 additional hours I took the foiled ribs out and remove the foil. To my surprise at the meatier end of the slab, it was already fall off the bone tender. The last 2 ribs fell out as I lifted the slab out from the foil. For the sake of the test I went ahead and place them back in the smoker for the additional hour. At 3 hrs I began spritzing the un-foiled slab with apple juice. After 6 hrs I took out both slabs. The foiled slab actually tighten up a little but still was very juicey and tender (fall off the bone tender). The unfoiled slab was also very tender. On the meatier end the un-foiled slab was also fall off the bone tender. As you moved down the rib they were still very tender and would come clean from the bone when eaten. So, I guess my conclusion is that either method would produce a very good rib. Both had a very pronounced smoke ring. I would imagine the foil method may produce a more consistent result. Just a guess, since I've done this only once. I plan to do it again with Qview, to see if these results are the same. Again I apologize for the lack of pictures and promise I will have them the next time. Also if you haven't experimented with Chipotle powder It's worth a try.