portable security fencing for rv storage

I would be interested in knowing if there are any statistics that show how many property crimes are solved with the aid of security footage. Obviously photos help in major crimes where there is media exposure, but I wonder if those dark, grainy videos ever solve a common burglary like the OP is trying to prevent. Placing visible cameras might dissuade some thieves, but their visible nature make them easy to disable and avoid. Hidden cameras might film the crime, but won't have a deterrence effect. I think a better investment than cameras would be security lighting.