Thank you, Richard. This is a good comment, and I might try to slightly de-saturate and deemphasize the poles and see what comes out of it.
However, far from an award-winning composition, this picture would be more suitable as an editorial insert. I would slot it more into an "Unseen" category rather than an art print. I captured it with a DX camera and 300mm lens at a distance of several hundred yards. The paddlers were coming down quite fast, and I had to deal with some erratic maneuvers, changing light conditions, and their respective positions. And I was also changing cameras as they were getting closer. Most of the keepers were actually captured from a much closer distance, with the boat filling the frame. Lots of fun!
Here is another shot from the same river, this time without any slalom poles.