Seltacking jib were fitted to traditional Dutch working boats from the 1800-1900 era. That is a good 150 years ago. Actually the principle is much the same with a larg pully block sweeping the foredeck. Multihulls ? A 2000-3000 year old polynesian invention ? And the wave-piercer hull is remarkably similar to 1994 Dart Hawk, that is BEFORE Eigner came out with the German flyer.

Like a wise man said, better to well stolen then badly designed.

Wouter