I would have to say that I do not think it's right if an adult shoots the game for the youth in a youth hunt. It would be like if the sockeye limit is 2 per person and you kept two for your four year old who didn't actually fish. But if you are confident that your son or daughter can make a clean kill and that they have proved this to you at the range then I don't see why you would need to shoot the animal for them.