> Somewhere I have seen there are conversion plans or suggestions for the
> Great Auk design to be enlarged to a double. Can you provide this info as
> to what dimensions should be altered and by how much. Thanks

See "The Strip-Built Sea Kayak" page 18 Figure 2-16. You might want to write Nick Schade and see how his brother customized it. It appears as though some of the center forms were duplicated.