My property is on a hill. All of my coops/pens are built on hills. My big "rooster pen" has a hutch at the top and then the pen slopes down to where the gate is. I have slipped and fallen SO MANY times going down this hill. Hill plus chicken poop plus moisture equals me on my butt. What would be the best way to make a safe "path" up and down the hill? Sand? Gravel? Pavers? Landscape timbers as steps?