I got to know the people in the front office at the place I have a season pass. I've even gone out and picked them up food/soda from time to time as they can't leave their area.
A few times last year I had forgot to bring my lock or left it in my car which was parked in the far back corner of the lot. If I had to go take a shit or get something to drink/eat all I had to do was walk into the office and ask them to look over my board for a few minutes. They were more than happy to put it behind the counter for me.
A couple minutes of personal time with the staff can go a long ways if you plan on spending most of your winter there anyways.