Unnerved, I continued to run along the road and was soon running along the edge of a hill that dropped off sharply into a deep ravine. Thinking quickly, I took off my outer shirt and tied it tightly around a large rock at the edge of the road. I sat on the road and slid in the direction of the drop off leaving an imprint and my scent. Pushing with all my might I launched the bolder and my shirt down toward the valley floor. I took off as I heard it start to crash down.

As I started off again I was hoping my ploy would buy me a...