I did a 22 lb Butterball turkey last year sitting on a cast iron "Chicken Rocket" full of apple Juice and a sitck of butter with foil still on it (slows down melt) stuffed into the neck cavaity above the breasts
. Sprayed with apple juice, honey and soy. It was great. Pics are on the old site.
This year I am going to modify the Bandera by adding the rotissary from my old grill and won't waste the time to brine because frozen Butterball turkeys don't need it, it is part of their proceesing. :D