RE: Tough decision as a land owner.....
From someone who is very family oriented let me tell you what I do. When someone hunts at my place (usually always family) I tell them...no fawns and especially no button bucks. I let them know from the start that if they break that rule they will never hunt on my place again...no exceptions. It's kinda tough, and your family may not like it or you, but it's your place, your rules. Everyone that hunts there should respect your rules and your land.