I'm certainly no expert
But I've shortened the foil time so it doesn't get too mushy, but I still do the smoke, foil, smoke. I add more rub after I take it out of the foil, and add wood again. Most people don't add wood and say the meat can't absorb any more smoke, but I figure it can't hurt, and the bark will absorb it. I think the 3-2-1 makes it much harder to screw up, which is good. Since mine are baby backs it's more like a 2-1-1, but these are almost four pounds each so it's taking a little longer. Maybe thirty more minutes. I also think I've decided cherry wood is my favorite for everything, sometimes mixed with apple or pecan.