With a smaller charcoal grill (no offense!!!) I would cook the bird in a foil pan on top of some onions, carrots, celery tops and a little liquid. Our grill is so hot (and we have a large grill) that we run the risk of burning the bird without a 'fire shield'. For the fire shield we use two layers of HD foil covering the fire side of the bird. I leave the other side open to pick up the heat and smoke. Does that make sense? It makes sense in my mind... Anyway... by the time the fire dies down and dwindles we've got the foil off and a nice crispy bird.