Did anything come about with any these designs. I was thinking about this exact same thing before I designed and built my own kayak inspired by Hairymick http://www.akff.net/forum/viewtopic.php?t=1900. I was initially thinking along the lines of two narrow, but quite deep vee's to keep drag to a minimum, but with "hydrofoil like"cross members to link and prevent the splaying of the two hulls and to try and create lift for potential added speed/ease of paddle. In the end I went away from this as I just wasn't sure how it would work as a paddle powered boat, but am still interested in the theory and maybe getting a design together and built.
Cheers..Nick
And yes Hairymick, the bug has bitten, nothing like a homemade plywood yak

