If I lived out in the country, I think I'd leave a handful of spent shotgun shells scattered around the porch and some obliterated targets strategically positioned near the entry points to the property. This would be along with more conventional preps of course. If any BGs did case the place, the recorded video could be very entertaining.
...and install some fake support posts impaled with 00 buckshot with the entry angle coming from the front door. ...oh, and maybe a few splatters of dried blood stains or something.
Then again, if the cops ever came to your house, you might have some 'splainin' to do!