The shotgun may be clunky, but if you have ever heard the distinctive sound of a pump-action shotgun being loaded in the dark, that in itself is a deterrent for someone being where they should not in the middle of the night.
It's the next best thing to the distinctive *pop!* of a flamethrower ignitor cartridge going to work.
Happilly, there are a LOT of folks prowling around in the dark who haven't got a clue what that sound is, though they're at least generally familiar with the sound of a shotgun getting one run up the pipe. And I just LOVE to surprise such trolls.
Maybe the Judge?