Theft at campgrounds???????????

I used to think other campers weren't the issue. Worked several seasons as a State Park Ranger. We used to have to deal with locals coming in at night, usually stealing beer from coolers, bikes, or the like. Few years ago while at Myrtle Beach SP had our camp sign and small folding table taken while we were off-site with the van during the day. That's what we left behind as a "place-holder", right in the middle of the site to show it was occupied. Obviously not locals - zippo value to them for those items. Quick walk around the CG and we spotted our little table in front of a high-end 5er. It was a $2 item from a tag sale. Really no way to prove it was ours, opted not to get into a p*****g match over it - simply commented to the occupants "hey - nice table"... They knew we knew - they were gone very early the next day. Figured our camp sign became kindling for their fire. So now everything has a unique identifier on it. Too bad it came to this. ST