Hi Frank, hello everyone,
Long time no see
For those of you who haven't yet had a chance to get acquainted with this patented, new type of very small, personal boat called W-kayak, I thought this movie and info could strike a cord, as they show it under sail (55 sq ft), sans outriggers.
That blog alone contains some 500 pages, and the website that hosts it about 100 more, including numerous in-depth technical articles, dozens of movies, etc., So I think those of you who may be interested to learn more, are likely to find answers to their questions by searching there.
The boat's principal applications are paddling and fishing, although some people have motorized it, usually with electric motors.
BTW, W-Kayak is a commercial name. The boat has little in common with either sit-in or sit-on-top kayaks, except for its being used for similar applications, and propelled by similar means.