There has been a lot of good advice given so far... If he is afraid of heights, then let him hunt from the ground. However, if it is that he doesn't want to kill something, maybe he could spend some time carrying a camera instead of a gun. Its the route I'm trying to take with my 10-year-old daughter. I realize that there is no way I'll get her to hunt with her brothers and me, but I still want her to be able to experience some of the same things, so I'm trying to talk her into coming out with me and we'll just see if we can call in some deer for some good pictures. (Of course, my luck will be that the 30-pointer decides to walk up broadside 25 yards away when we only have cameras...)