FastGuns / Hallmark - how to provide extra camper security?

I doubt anyone could steal just the camper.
But the Ford is supposed to be the easiest truck to steal. Door locks aren't very good. If you park in an urban area, try to back it up to an immovable object, tree, sign post, etc. Sometimes thieves use a wrecker to steal trucks, particularly in pay to park lots. Many trucks stolen in border states are headed to Mexico.