That thing is so cool!
Mike Clark of Big Muddy Adventures in St. Louis has one of these Clipper canoes. It's called Bob. He takes many schoolkids and families out on the Mississippi River. I really hate to say the thing is unsinkable, so I'll leave it at that.
It's also Mike's vessel of choice going through the Chain of Rocks. Here's a shot of that:
http://2muddy.com/images/Chain_of_Rocks_Clipper_Canoe.jpgHe's also got a massive cedar strip canoe (called the Junebug) that he's bringing to the Race to the Dome. He's selling tickets for a downstream float. You can sign up for a ride through Mike -
www.2muddy.com or mike@2muddy.com
Here's the Junebug a few years ago at RTD:
http://farm5.staticflickr.com/4080/4777628135_517a5170d7.jpg