You might also want to refer to Woodenboat May/June 1986 pg 57. The article by Dennis Davis on "Building the DK13 Kayak" is informative and fun. You might be able to use the plans provided if you are willing to scale up, loft and play around a little. Noitce that the supplies list ofr the DK 13 is in the leetter section of the following issue.

Funny folks should be interested in these i was researching my next project about a week ago and was in the library, think it will be Yare next. Let me know what you deicide.