Mom and I were out swinging bugs for winter steel on the Queets a couple years back. It was Janurary about 4pm, cold. We were slowly working down a run, my mom 50 yards downstream. Cast, two steps down, cast, two steps down.... She was about thigh deep at the time and felt a drop off in front of her. She took one last cast and decided to start wading back to the bank. She turned around to find a drop off behind her, too. I heard her gasp and saw the look on her face. That one day, was the one day she accidentally left her wading belt in the car. I pushed downriver as quickly as I could. As I reached her, I too stepped and could no longer feel the bottom. I threw her the end of my spey rod, at this point she had her chin up with water almost pouring into her mouth. Slowly I was able to ease her back to shore. It took 25 minutes to make it back to the rig, she was showing all the signs of hypothermia. She stopped shaking as we pulled into Amanda park to re-collect our thoughts. While methodically and slowly working down a run, if you can't see bottom, you may be walking down the plank.