My smoker likes to run at 260-275* so my baby backs are usually cooked to a good bending point in about 3 hours naked. Then I sauce/glaze them for about 30 minutes. I smoked ribs unwrapped for many years until it became popular about 4-5 years ago to wrap. I was getting mushy overcooked ribs. They were not fall off the bone, when I took them out, they had already fallen off the bone. About a year or more ago, I stopped wrapping and my ribs returned to what I used to have. I have been getting great results by smoking them naked. So that's my $0.02.