Do I need to lay an apron around both the coop and the run, or just the coop, or just the outside parts of the coop/run? Our coop has a dirt floor and likely we'll keep it as a dirt floor, though I'm still reading pros and cons to various ideas. I'd like to be able to leave them in the run if we're gone for a couple of days. It would actually be great to be able to just leave the pop door open and just close off the run at night (they will be free ranging), but I'm pretty sure we have raccoons so the logistics of having to predator proof the run that well might be too much for now. What do we do with the edge of the apron against the coop? Ideally I'm sure it would be best to bury it under the coop, but if that's not possible will folding it under itself against the coop be secure enough? Also, is 3' overkill? It's the only width we could get, and I could probably find a use for the extra foot if we cut it down. In fact, if we should be running an apron around the run too I might use the extra foot and overlap it to get two feet, if that makes sense.