I'm 6'3" and have a 27" draw. A lot depends on your anchor and shooting style. If you a dealing with a new shooter, their anchor may change over time....mine did. I used to draw 28-29 in. I would make him a very long bow with as long a draw length as possible, make him some 32 in arrows and monitor him over a few weeks of shooting. Once he has established a shooting style and consistent anchor, you can make changes in arrow length and spine. IMHO