I'll stay tuned to any electric wire information as well. I might consider adding that to mine.
For me, so far anyway, the hardware cloth that we installed as a predator apron around the coop and the run has worked out so far for us. On 5 acres here in north florida we have had raccoons, possums, feral cats, the occasional stray dog, a bobcat and a coyote so far. Lots of hawks as well.
For the coop, we dug down a few inches to lay the hardware cloth apron. For the run, we just laid the hardware cloth along the ground - all air stapled to the coop and run. I've yet to come up with a plan for integrating new chicks, but based on the amount of critter activity we have here I would say it's a good bet I'll need at least the same amount of ground protection wherever they go. This thought gets reinforced every time I see one of my dogs dig a hole deep enough for me to break an ankle in less than a minute.