I think it's called the Iroquois hunting preserve but I'm not sure. It's a state park though, not private. You have to check in in the morning and they assign a parking area to you and you get ready and wait there. When it's time to go in the woods a truck drives down the road and honks its horn.
Not sure about the number of people but we went on Sunday and there were only about 30 people in line. But that was second weekend of shotgun so it might have been light. The guys I went with said during the week, there are a lot less people there.
Not sure again about the rules. Limit is two birds. You can't shoot anything else even though the seasons are open, just pheasants.