Indirect heat on the grill for 8 - 12 hours. It will be moist and just fall apart. MMMMmmm Season with your favorite BBQ type seasonings mix in a little BBQ sauce after "pulling" apart and serve on a sandwich. DH prefers a little cole slaw on the sandwich. I like to just eat mine with a fork.
I also occasionally roast it in the oven in one of those oven bags then serve as a roast with gravy.