Since it is run like a Deep Go Route, how does the QB know where to throw the ball since he cannot simply lead him with the pass ? Is it a landmark thing ? Ball on the 40, will the QB aim for a spot 20 yards downfield based on drawing an imaginary line from the QB's eyes to the spot based on the WR's body position and calculating his speed and timing your throw so the ball gets to that spot when the WR and his shoulder closest to the sideline arrives at the same time ? Also, is the back shoulder throw becoming so popular that it is a "called route" or is it always or most of the time simply a sight adjustment ?
