In the Berkheads, folks from Raleigh go hiking with orange hats hanging on the back of their pack, never on their head. It really isn't necessary, when they never leave the trail.
I snuck up on a hunter once in the SE corner of the Berkheads. He was sitting on a deadfall, talking on his cell phone, and paying no attention to his six. He hung up and I said, "Hello!" from about 20 feet away. We talked for a while, and I went on my way. I learned a lot about that neck of the woods from him! Anyway, if he had looked in my direction before I spoke, he would have seen me, not a deer.