hey gotigers, I have proof, it happened to me. I had a helicopter over my grow, and 6 cars with various law depts. (all plain clothes) Gladwin county. They told me I was turned in by a private plane. I later talked to a pilot friend of mine, and he said he has been approached, they give them free fuel to turn in people, so pilots do it to fill up their planes.
I had a 11 foot fence that you could not see in, was back in 1/4 mile driveway with 40 acres around me. The only person who would find it was a helicopter. Not one soul knew about this, so I have to believe it. They told me it was not in compliance with the law, and I needed a cover. I had the greenhouse laying right next to it, not installed yet, and they told me I could either put the plants in that, or move them to my pole barn. They told me they would come back to check to see if I did it, but they never did. Although I had them moved/cut and my pole barn done that week. I thought for sure I was a goner, but they were pretty good, I had a number of plants hanging, too (still wet) They came upon my patient trimming a plant. they said if they were going to arrest anyone, it would be him, because he was there trimming the plants, and he was only a patient. They also told me I had to fence in aisles for each patient with a locked door for each 12 plants in my greenhouse.
Now I am on this site, looking for anyone who has greenhouse experience, as I know I am ok now in my county. per bayanet, michigan state police, and gladwin county sheriff dept.