Well, if you had a board that was 8 feet long and 6 inches wide and 3/4 inch thick, it would contain 3 bf of wood. How many strips could you cut out of it?
For 1/4 inch strips, I'd figure that each strip plus the adjacent saw kerf would be about 3/8 inch, give or take a little depending on your saw blade. 6 inches divided by 3/8 equals 16. So that give you 16 x 8 linear feet of strips or 128 lf. Multiply that by 10 gives you 1280lf or enough for one Great Auk. So 30 bf is about right, at a minimum. But I'd figure in some waste factors, like wood that isn't perfectly clear, ripping errors, cove and bead routing errors and picking and choosing just the right strip for each location on the kayak. You won't go far wrong with 40 bf.

Mike Scarborough
Friendship Kayak