Thanks, JHC -- I appreciate that
I've done a similar thing, Coyotesfan. In the most extreme example I can think of, I was hiding behind a file cabinet and just made sure to keep myself within the shadow that it cast. I couldn't even see the guy who was looking for me, but he was using constant light. As the shadow shifted, I just moved with it, ensuring that I was always "behind" the cabinet from his perspective.