<BLOCKQUOTE id=quote<font size=1 face='Verdana, Arial, Helvetica' id=quote>quote:<hr height=1 noshade id=quote>Simple If you don't have a tag than you are not supposed to shoot him.
If you do shoot him without a tag its poaching. Might not be humane but that's the law. Mother nature will take care of the deer in one way or the other. <hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face='Verdana, Arial, Helvetica' size=2 id=quote>

I guess that same logic would apply to hitting a deer with a vehicle but that is not completely dead. Either tag it or leave it to suffer alongside the road.
If it is obvious the deer is not going to make it, be humane and take him out. Clear and simple. Just my opinion.