A camera tells you what the perp looked like so you can tell the authorities what the perp looked like and you most likely won't get your stuff back anyway or get the perp busted as it's small time theft, nor will the perp get any real punishment if caught. Best bet is to secure your stuff. Most campground thefts are from folks cruising through grabbing stuff to make a quick buck to turn into quick cash and are not around to be confronted after the fact. The same people hit cars at trailheads. I would advise getting an alarm.