Let him bring his phone, iPad, book etc, with earphones of course so he does not get bored. If he is not into that stuff, do not make him stay after he starts complaining or being bored or cold. Plan for the cold, snacks as mentioned is good advise. These things can make or break your hunt. And do not ever get on his case about his lack of patience at his age. Or he may absolutely get a bad taste for hunting and not want to go. My daughter used to go with me, and she did pretty well. As she got older she decided she did not want to go anymore, and I did not force her. She still likes to shoot once in a while and will fish. She will eat anything I bring home. She is 15 now, maybe she will will change her mind, maybe she will not. Ill bet she may would go rabbit or Raccoon hunting with me again. We will see.