Yup so bold they trespass all the time. My brother sick with cancer last year didn't hunt. In Oct this year he went to the back of his woods and found a blind with a pad lock on the door. I would have just hooked on it and drug it to the ditch.
He called the law and they took it, probably for them selves.
He is near Leroy south of Cadillac on 131.

I always hunted the UP during fire arm deer season and the wife never went in the woods here at home. After my hunting partner passed away I never spent the whole two weeks in the UP. I would hunt in the back yard. Had a huge trespassing problem. After I told a guy I caught twice I said no more warnings. I started pressing charges and they don't trespass any more.
we have lake frontage IN THE up we paid 15.00 a foot.
Not to hard to get land all woods for 500 an acre in the UP these days. Land value there like here dropped 40% in 2008 when the ship hit the fan.

Al