How about taking a Hobie 16, shortening the mast, adding human powered paddlewheels, a large redwood framework, a canopy and a port-a-john? Then you steer this craft down the Ohio and Mississippi Rivers with two men onboard, one 55 and one 80 years old. They are doing this to raise money for ALS and this is happening as we speak. They are near South East Ohio today. You can check their progress on this site.
http://cureals.home.att.net/


Jack