RE: Guys who have land that hunt hunt everyone else's
He had to have been lying. Even if he WAS a police officer, he wouldn't be making those claims about arresting you knowing all the time that HE was in the wrong. Call his bluff and call your father-in-law and the DNR police That'll shut him up and cause him some true concerns. If he really is a police officer, he's toast.
Until a few years ago, I always had to hunt on public land in MD because there aren't enough turkeys around where I live and I didn't have permisiion in the western part of the state. The locals out there were all killing the longbeards BEFORE the season opened on the public land and then saving their own land for the real season. Talk about frustrating. I was told about this by more than one of the people actually doing it!