The Wingsailer one of the earliest rigid airfoil boats and was made by Fiberglass Unlimited - now Sharp Fiberglass, the makers of the Isotope and Cheshire catamarans. Frank Meldau also built a foiling boat long before they became popular. See http://cctexan.tripod.com/wingsailer/brochure/page3.html, http://www.sailingtheweb.com/sailboats/Wingsailer/Wingsailer/ and http://www.sharpfiberglass.com/our-history/ for more information.