moonie, you make a good point about perps skedaddling by boat. I pondered that very possibility myself, and then continued pondering. In fact, why worry about them escaping in their own boat, when, since they have broken in, they could steal MINE?
Or, they could arrive by helicopter!
Hell, a truly determined thief could swim across the fairway from the gas dock and plunder me asunder!
No matter what i do, i am not going to be able to build an inpregnable floating fortress of solitude, so i simply decided to find that balance, for ME, of acceptable risk. Your risk level may vary.