Did you never read "Mad" magazine. It is a case of "Spy versus Spy" and every defense will be defeated by the bad guys if the prize is worth the effort. Packing around a high tech and expensive safe would slow them down or make the show even more interesting, until they hitched up the whole outfit behind a tow truck and took it to their shop to finish the job. We have a saying here in South Texas, "You build a twenty foot wall and someone will get a twenty one foot ladder".
I keep my generator hidden under a bed cover and only expose it in relatively safe places. Plus, I own a Champion that "Everyone" knows are not worth stealing.
