A quick and efficient way to cook a whole bird on the grill is to butterfly, or "spatchcock" it. When cooking a whole chicken on the grill, try searing the chicken first over direct heat then finish cooking over indirect heat (as instructed in this recipe). That way you avoid the all too common problem when grilling--chicken burned on the outside and raw in the center. For best flavor, let the chicken marinate in the rub overnight in the refrigerator. Serve with lime wedges and fresh salsa.