I have had many things stolen from me over the years. Nothing in rc yet and I hope I never do.
Most thieves will steal only when opportunity is clear and present. That is, if it’s easy to steal it, its only a matter of time before its gone. Stealing is a very cowardly thing to do, so they don’t want to get caught doing it.
The key thing is theft prevention is to make it hard for anything to get pinched. When I go to race a heat and there is nobody there to look after my gear I always zip things up, close lids etc. “out of sight out of mind.”
As unsociable as it sounds, I tend not to hang out in the pit areas. I will setup shop on the side of the track with my own table etc. when I am on the driver’s stand I can see if anybody goes near it.
Our toys are bloody expensive. It would certainly ruin it for me if I was to have things stolen.
My$0.02