The water at the switchback was frozen when we came through and were not able to pump there. It was to the side of the trail, so no traction issues. We chose to pump at the stream before you get to trail camp. It looked at little clearer than the lake. Plus there were no visible wag bags in that water. Grrr.
I was disappointed to say the least at how many people just left them in different places, but that's a different topic.
