Securing you rig from theft (truck and camper)

BarabooBob wrote:
A friend of mine has empty .45 ACP casings laying all over his deck by the front door. He has had many salesmen leave without knocking. For mobile applications, leave a couple of empty casings on the dash.

That sort of thing might scare off salesmen. I suppose it could scare off thieves if they think you're there. But if they're sure you're not, that would only encourage them to break in. Guns are high value items, easy to sell for good money.