I can only answer the question based on my experience---yes, there are drills that improve your concentration and hand placement, but by the time you are 30...., but more than that, the timing of the QB and the kind of ball he throws made the biggest difference for me. I liked the rocket launchers better than the grenade tossers--but to each his own. I wonder if Brees threw a ball that was easier for him to catch? It is an interesting question.