From my experience at Shuswap Prov Park over two summers, it sort of runs in cycles. We'd go for a couple weeks then all hell would break lose. Even during the day. In two years we never caught anyone and that wasn't from lack of trying. We'd lie doggo out in the weeds and nothing...go have lunch one day and the radio would just take off, with reports of mad campers, coming back from the beach to no beer, no dinner steaks.
And the economics of having the police spending much in the way of resources just doesn't make sense. A cooler is anywhere from 20-100 bux. Some beer or food...a few more dollars vs $100,000 a year for a patrol officer doing that rather than their regular work. I know..it sucks, but there it is.
Gary Haupt