We locked shit up religiously this year, and had no problems with theft. We even had a little combination luggage lock for our tent zippers.
My first year, my bike was stolen while parked at a sound camp, even though it was locked and decorated with my name and camp address. I never changed the lock combo from the default number, figuring that the mere fact that it was locked would be deterrence enough. That really hurt and it was my only bike at the time.
Last year after the man burn, a couple guys tried to walk off with our bikes while my boyfriend was guarding them at the port-a-potties. He was standing right there! They walked to the port-a-potties with no bikes, grabbed them and tried to walk off, and pretended they'd made a drunken mistake when my boyfriend called them out on it. Someone also stole my sister's bike from our camp... but then returned it the next morning. No harm, no foul, and we actually thought it was pretty cute that they returned it.
