I know a lot of people out there are in to SUP'ing (Stands up Using a Paddle). I have seen the schematics (online) and I don't think christo took SUP'ers in to account. There are spots where they simply will not be able to fit under the rags. (As a side note I don't SUP ....yet, I was going to go last weekend, but the Teen Abstinence Rally I went to instead was pretty powerful).
And last point: I don't believe that Christo considered the breeding seasons of trouts, and other fish too. Male Trouts begin to feel amorous towards lady trouts due to increasing heat and light. Christo is going to hang over 2,112, 000 square feet of fabric over the river (= 8miles x 5280 feet x 50 feet wide). according to one report this could lower the temperature of the water by 3.6 degrees and produce widespread trout celibacy, there by decimating the trout population.
Dead SUP's and asexual celibate trout for the sake for the sake of art? I say no thank you sir.
Keep the Arkansas Wild and Free !