I did an apron of at least 18" flat around my hoop coop, using landscape pins to keep it flat.
ETA: the soil wouldn't hold the landscaping pins on one side of the coop, so I got some tent stakes:
https://www.backyardchickens.com/threads/fuzzis-chicken-journal.1550586/post-26659439
That's my plan. I bought wire at the beginning of my original build, but I wasn't able to use it. Even using pliers I just don't have the hand strength to make it tight. So everything is held together with black zip-ties. I plan to replace as needed.
I thought it was pretty taut, I have it secured all along the bottom frame every six inches with fender washers and long screws.
Guess I need to do some more to tighten it against the cattle panels.
:pop
I don't believe we have mink here, but I will add my vote for hardware cloth covering the entire run. Yes, it was expensive, but how much do those little birds mean to you?
This is what I discovered yesterday, raccoon damage I believe:
Someone was pretty determined...think about the strength...