The challenge of completing the EC in a sailboat, even with the difficult access to some of the check points seems like a reasonable challenge.
The challenge of completing the UFC including the narrowing river portions with snags, filters and shallow waters, and the 40 mile portage with a traditional sailboat or catamaran seems much more difficult. Did Crazy Russian do it with his catamaran with inflatable hulls? There is a video of him running the Bull Shoals section of the Suwanee River. I wonder if any sailboat, other than the kayaks with sails have completed the UFC.
Sailing has long been my passion in life. I only learned of the EC and UFC in the month before the start and they certainly are intriguing to me. I've spent a fair amount of time following these challenges and learning more about what people are trying and how well it's working. I wonder if Randy Smyth originally designed and built his unique Sizzor sailboat with the plan to use it for the UFC, then switched to using a kayak for the Mary's and Suwanee river sections and the portage when that class became an option.
These are great challenges. With as much as I've learned, I still have many questions. These challenges are not on my bucket list currently, but they certainly have captured my attention.