Excellent points given, I agree. I hunt on pins and needles, I really never settle down or just stare. (I don't move lots, just be really attentive and scan) I look for lines or shades in bush, often indicating deer approaching. Obvioulsy listen, but not to hard, I have noticed we tend to think it is coming from hear, but then it appears over their. Main reason we listen to the last area of noise, but they might move undetected.