A hunter needs to be both physically and mentally mature to safely hunt alone. The decision process is so important and really isn't fair to put a kid out there that isn't ready. Most states have laws relating to children and minimum driving age and my take is much the same with hunting. A loaded gun is just as dangerous as an automobile for someone who doesn't have the experience or judgement to properly use them. I vote for 16 with all the proper training to go it alone wihout supervision.