Secure run: to bury or not to bury?

[UrbanEnthusiast]

I have heard some folks say that you have to bury hardware cloth horizontally underneath your entire run if you want it to be secure from digging predators. But this video linked below from the University of Iowa says all you have to do is bury fencing vertically around the perimeter, 12" down and 6" "toed out." I'm inclined to try the easier route first. What do y'all think? Tell me your experiences with digging predators.

 

[Cyan929]

I plan on going the aproning route, which is doing the perimeter. I have seen different variations on how deep and how far it needs to extend, but seems like that should do the trick for most predators.

 

[Lady M]

I'm turning out old hog pen into the new chicken area. So I've got about 8" deep burried fencing lined with borders, the hogs never got out, so I'm banking on that from letting predators IN. haha. Hope it works out!