I just got a side firebox for my chargriller and tried it out sunday. I did the same method I used before but they came out better with the heat\wood in the side firebox instead of just pushed off to the side.
I let the ribs get close to room temp and rub (b. sugar, seal salt, paprika, b. pepper, crushed coriander and a little cinnamon) them and let sit for a while (hour or 2). Then smoke for 2-3 hours with some hickory (this time I used some cherry) then pull off and but in a pan with butter, apple cider, brown sugar and cover. put back on for 1-1.5 hours. Some times I put my homemade sauce on and put over direct heat for a little bit to crisp them up.
The bones pull right out of them, the meat is tender and juicy...delicious!
FYI...here's another thread on ribs:
smokin ribs