Been following a thread on vines in the coop/run... and someone posting something that made me start thinking. Anyone used thorny vegetation to keep predators out? What if I surrounded my pen with thorny roses, barberry, etc. ?? I know that you can use them for "natural" fencing... I have hedge roses planted all along the inside of my dog fence to keep my dogs from trying to dig out, etc.... they don't go near them Would a coon try and get through these?