I can tell you I have an extremely rigid K1 made by Kirton, and the hull is 1 layer of carbon, no core at all...

: I have already built 5 S&G Yaks, all of which I glassed the
: hull and decks with standard 4 oz glass.

: I've now got into racing and am considering building a strip ICF
: racer of my own design with the help of The Kayak Foundry.

: I'm thinking of useing 1/8 Paulowina for the strips (and even
: possibly some balsa ,to keep the weight to minimum ) and glass
: inside and out of both deck and hull with either ,ONE LAYER of
: carbon fiber ,or alternativley ONE LAYER of 4 oz galss.

: (I have used carbon covered balsa for rudders with great success in
: the past.)

: I may vacum bag if practical.

: The object is to get the benifits of a cored hull, of light weight
: , that will only be used in still water racing ,therefor
: standard durability need not come into the equasion.

: Can anyone who is familar with cored hulls ,tell me what are the
: strength differences and any pluses and minuses, of using the
: one layer method of carbon fiber instead of 4 oz glass.

: Dont worry about commenting on the cost differences as I have
: aquired enough carbon fiber already ,very very cheaply.

: Thanks Bris Paul