i agree you did the right thing...i wouldnt worry about it one but he was in the wrong and sooner or later it would caught up with him..everybody pays in the end...you just saved a few more deer from being killed...your a good person for doing the right thing..and you should continue doing so...it would be hard doing it to your friends dad but you still did the right thing...if you tell the kid its almost a guarrentee he dont talk to you again and hates you unless he didnt like what his dad did...but chances are he did it too once in a while or helped his dad if he wasnt against his dads poaching...i think you did right! congrats to you...dont feel bad!