Many years ago, I used to fish stillwaters with a fellow by the name of Guy, who had bad knees.  I don’t know how bad the knees were. All I know is that when I was crouching in the tall grass or beside a bush at the water’s edge, he was standing tall, because it was uncomfortable for him to crouch. So I was at an advantage. I could take cover just a little more than he could. So the fish were less likely to see me, and I would catch more fish. Neat! Except that it didn’t work like