Darryl,
It is not that foils don't work. The problem is that the Trifoiler and the Windrider Rave sail very poorly when there is not enough wind to foil. I would be nice to have a little, high-performance tri that would sail well ON the water as well as above it. <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" /> And maybe sold either with or without hydrofoils.