In July 2010 I had just finished taking a break and eating a snack when I began to get a "gut" feeling I was being watched. The hair on the back of my neck stood up and I could "feel" someone or something's eyes on me. I decided to try something different so I turned my back on the area I felt the culprit was hiding and acted like I was interested in something in the opposite direction. I turned the camera backward and just filmed directly behind me without looking.
I took almost ten minutes of video like this every couple minutes I would turn my shoulders and look left then right but never turned around and looked directly behind me. The tactic was to see if I could get what was watching me to move or react to my movements.
The trick worked and when I reviewed the video I found something interesting hiding in the heavy vegetation.
During the video I noticed that when I turned my shoulders the subject would turn it's head in the same direction. Below is an example of the it looking forward then looking left as I turn in that direction.
I also noticed like so many other Bigfoot, even though body remains almost motionless the eyes and mouth tend to move constantly. The below animated GIF demonstrates the opening of the mouth and eye. Was it producing infrasound?
The moral of the story trust your gut!