The bridge abutments are the biggest issue, some with wood. The water is down so most of the shore strainers are out of the water.
The first bridge and the railroad bridge (on the other side of south canyon) are the ones that cause the worst problems.
The play wave goes on the far sides. The surfers will mark the clean path on the right. Keep to the left of the kayakers on the left. The middle will give you trouble.
On the river, I can abandon who I am and what I've done. However brief it lasts, while on the river I am nothing important and everything insignificant. I am flotsam, and happy to be so.