Just got my first smoker a little bit ago ( a small horizontal offset) and this weekend did my first chickens. I just used some store bought bbq chicken seasoning and threw them on the grill. I had a bit of trouble keeping the heat consistent, stayed mostly between 225 and 240, but did have it drop once to just under 200 while I was starting some more charcoal. Had them on for about three hours and the one closer to the fire box ended at ~180 and the other at 172. All in all I think it was a success! Now the question I keep asking myself is, "what's next...?"