Boise-girls
Songster
I had been thinking of using pavers on my pen extension, too. Your description of "predator logic" changed my mind on that!It will be better to use hardware cloth skirting than to use pavers. Digging predators start to dig at the base of the visible obstruction, going under any walls or blocks that they can see. With the wire skirt they start to dig at the base of the wall, hit the wire, and give up because they don't understand why they can't dig there.
There is someone here who has anti-hawk netting arranged around trees but I can't remember who it is or how it was done.