I have had a couple types of smokers over the years, and always was just not quite happy with my smoked Baby back ribs. So most of the time I boiled them, then finished on the grill just to carmelize the BBQ sauce.
Then I found 3-2-1 ribs, you can Google it for details.
Basically, apply a dry run, better if you let them sit overnight.
Then in smoker for 3 hrs at 225.
Remove and double wrap them in foil and add a little liquid, (cider vinegar, beer, soda or whatever) then wrap them up tight. Back in the smoker for 2 hrs @ 225 or use the oven smoke not needed, this step just steams them.
Remove from foil, apply your favorite bbq sauce. And return to the smoker for 1 Hr @ 225. This just sets the sauce and finishes them. I do not smoke during the last two steps.
The best I have ever made, often rivaling any ribs I have ever bought.
My current smoker is a Masterbuilt electric so I can use it as an oven for middle stop and maybe add
Heavy dry rub is key.
Enjoy
Jabis