Depends what type of smoker you have. You need a vertical smoker. Here is a picture. Hanging it in the bag allows the smoke to penetrate evenly throughout the bird.
Homemade Wood Smokehouse, Charmglow gasser, Smoke Hollow, UDS, dual chamber homemade grill
Certified MOINK Baller
UNLINED DRUM KING OF CHICAGO AREA
Scrap Iron Chef