Just to be clear i never said you should use pitbulls as guard dogs. Imo theres only one use for pitbulls, two if you count that they make lovely pets. I get your point jack, i wouldn't use ovtjarkas either unless my dogs were fenced. But if my dogs are fenced they are a great way of keeping wild animals away.
Running only makes it worse LOL Stay your ground, make yourself big and bluff like a mofo LOL