i'm new so pardon my ignorance. i have tried to do some research, and keep getting hung up on 1 point. everyone says to bury at least a foot of the fence for your run; but do i need to attach it to something before i bury it? like a piece of treated timber, or do i just bury the bottom half of the frame? or do i leave extra wire hanging from the bottom of the frame and bury the extra? i also saw something where the guy built the run and then dug trenches a foot deep and filled then with chunks of rock. just not sure what is the best idea. am I being too obsessive? I live in los angeles (in one of the few green areas), and we have coyotes, hawks, skunks, raccoons, feral cats, possums, and I have a border collie. not too worried about putting together the coop, but want to make sure that the fence around the run is as good as I can make it. i have a really big yard, so would like to make a nice roomy run for them. since we have so many hawks, I was going to cover the top as well. thanks for your help.