The Belly Play out of Splitbacks

Picture a "Pro Right" formation. For my fly series, if I'm running a belly toward the right side of the formation, my left back will be running it. Right side back will be leading outside for the fly sweep. His landmarks are to read the edge block--read it just like a ballcarrier. My teaching of a J would be for a RB to taking an arc path to the opposite G. He'll come very close to the QB. It is different than the Iso track because it is more an arc than a flat path, put your foot in the in the ground an get down hill. Our technique is probably different from Coach Campbells, I'm guessing. Our QB pivots toward the belly back because he is opening toward the fly sweep.