when does a preper become a raider

[Skvez]

You can recon the property but if the other person is operating sensible OPSEC it's still quite possible you may think the property is abandoned when in fact it's not. It would be very easy to have a concealed observation post in a scrap yard. Unless you have 24-hour surveillance from a number of different points that lasted many days you could easily miss the 'guard' coming and going to their concealed hidey-hole, and who has the time for that sort of surveillance.