I was watching Laird's hydrofoil bit in "Watermen" and I started thinking about a center fin fcs made a few years ago that used the hydrofoil concept. I never picked one up, but I was wondering (if anyone has ridden one) what it was like.
Like this? http://www.wavegrinder.com/index.htm I'm not sure I would lay down $50 for a pair, but I'd deffinately be game to try some.
This was just one fin and it was made by fcs. I think it was called the 3-D fin If you saw one sitting in a shop they must not have sold that great