He was taking a break of fighting the current behind the large boulder. What is he sitting in, I'm not sure what this is exactly. It's way too small to be a kayak, unless this is a mini version of it. Also, no....the water in Minnesota is not yellow. That is the sun's reflection on the rocks on the shoreline. It's very strange how yellow the water looks in the photo, but I don't recall it being that color when I took the photo.