Hope you like pushing. I did it at about double the current flow and scraped more than expected in my kayak (still thought it was a lot of fun, though). I won't say it can't be done (because it probably can be, barring ice dams) but most people stop having fun at a certain point (and my standards are WAY lower than most people's). That being said, I'm jonesing enough that it sounds like a good time right now....
"The world would be a better place if everyone kayaked."-Brad Ludden (Valhalla)
"You only get one chance to run a drop blind."-DD