Done both. If you foil, use 3-2-1. 3 hours in smoke, 2 in foil, 1 more in the cooker no foil or smoke. If you're saucing do it in the last half hour or so.
I've found they turn out just as well without, and doubt I'll ever use foil again for ribs. I do use a water pan.
Do you use water in the pan?
THIS!!! I find myself cooking them without foil for myself, but with foil when cooking for a crowd. As I'm sure that most will agree with, my guests seem to go crazy for "fall off the bone" ribs, damn near bordering on mush. I don't prefer them that way, but you gotta give the people what they want.
I almost forgot, that I should be thinking about the people I'm cooking for also!
I've experienced that. Guests love 'fall off the bone'. So ill-informed!
I thought I did too, but after some tests in the oven, I felt they were way too mushy.. I don't know how everyone thought "fall off the bone" was the epitome of good meat
Thanks all, I think I'll try the comparison test, since I think Costco packs at least two racks in each cryovac.