Off the top of my head, I would look to some hunters education courses. For big game hunting with a gun here in NY, you have to attend a hunters education course, but if you want to bowhunt, even if you do not want to gun hunt, you still have to attend the regular session, plus an additional bow hunting session. I think that there is a total of 16 hours required in total. Much more then you need for a car license! Now I don' t think that there has been many studies to the actual ethics of gun hunters, verses bow hunters, but there is additional education required. which hopefully has some type of impact on ethics.

There is a book by John Trout, in which John examines some of the differences in wounded game between using arrows and guns. His conclusion is that although a bullett produces much more shocking power then an arrow, that effect will wear off on a wounded animal and a broadhead is every bit as lethal. He also looks at some actual studies done on recoveries and deer survivals rates on hit aminals.

http://www.amazon.com/exec/obidos/tg...glance&s=books


Don' t know if this helps or not, but may be a starting point for some ideas.