Bill,
I agree that basic protection (parking in a safe place, locking the car, perhaps turning the steering wheel to lock it, etc.) is probably the best thing you can do to protect your Pagoda.
I also agree that people are generally respectful of pampered old cars like Pagodas.
On the other hand, I've also heard stories that give me pause.
For example, I've heard stories where thieves will pillage a car, sometimes repeatedly over the course of several days/nights. It happens to cars that are known to have certain good parts. This happened to a friend in the suburbs of Washington, DC with a 6.3 and I've read about classic BMWs in London where this has occurred. No doubt there's a recipient car on the other end that has specific needs. The grill, bumpers, and tailights are all extremely pricey on our cars and would make for easy prey to those inclined.
On my sedan, I've experienced a stolen hood star and broken Hirschmann in my garage here in NY. I try not to let it get to me, but I do know people who have honed the edge of their hood star to give it a knife-like edge for any prying hands. (Of course, the only Pagoda this would apply to would be the customized green SL at Geevers in Cees' recent posting.)
Douglas Kim
New York, NY
280 SL #018260