To me, a good hunter is one who has attained to a high degree a broad set of skills and knowledge associated with the sport. He/she of course must exercise those skills in a legal and ethical manner. IMO it has nothing to do with how many he takes or how many he passes on. If you agree that it is knowledge and skill that makes a good hunter then the decision to pass on or take an animal is neither skillful or knoledgeable, it is simply a decision a good hunter has earned the right to make. I would agree that it takes some amount of killing to initially develop the skill necessary to properly execute at the moment of truth but once developed its simply a decision as to whether or not to exercise what you know how to do. Note that I said a broad set of skills and knowledge. There is a whole bunch of stuff that goes on both before and after the kill that IMO are also associated with the skill and knowledge of a good hunter. From field dressing, equipment maintenece, sharpening a knife to how to keep warm on stand are all associated with being a good hunter. To me a good hunter is somebody you can go to with just about any question related to hunting and he will have some experience in it and some practical advice for you.