I was busy this weekend repairing one of my irrigation tanks which is buried at the bottom of our garden and I got to thinking wouldn't it just be easier to dig a moat around the property and kill multiple birds with one stone. I'm sure it would be an eco-friendly solution as well as having obvious security spin-offs as a bonus. Even a smallish moat, say 3 meters across and 2 meters deep would make any opportunist thief think twice assuming he didn't have his Speedos with him. I could even stock it with fish for a little in-house weekend sport (excuse the pun).
The more I think about it the more I can only see advantages. I can't imagine why something so effective and simple would ever have gone out of fashion.