: I sure didn't do it in a SOF kayak, though!

Me either , but that doesn't mean is can't be done. The attached SOF pic is
from a slalom race in Latvia. In Russia, as in the Baltic region, inflatable
and inflatable / folder /hybrid ( alum frame) whitwater boats are fairly common.

Below are some pics and a Link to a few of them. I have a whitewater K-1
inflatable / folder ( 10' X 24") on the drawing board. Should be ok for lower
class runs on Colorado rivers. I expect to be laughed at, but it won't be the
first time .... or the last

http://www.yostwerks.com/SlalomK2.jpg
http://www.yostwerks.com/SlalomK2A.jpg
http://www.yostwerks.com/SlalomK1.jpg

Tom