I don't know how you can focus on hunting deer, the game that can appear without sound in an instant and disappear just the same way while looking for squirrel those noisy rats with fluffy tails at the same time. IMO hunt the deer, then if you still want to chase the squirrely little critters, do it after the season when he also won't be screwing up somebody elses hunt with gun shots in the woods. Mature deer are a tough enough to the way it is. Focus on it or forget it.