John, Here's a link to the LFH17 I built two years ago. http://www.duckworksmagazine.com/12/projects/lfh17/index.html

And I recently launched another of the same,as noted in latest Duckworks launching page. And in between these I built the BC Handliner converting from lapstrake to SoF. I tried to follow the planking lines for the stringers in these builds, but w/ recent experience w/ the willow ribbed canoe (SoF) where ribs are place by eye, I would use that approach on my next SoF build. As you are working out w/ your stringers. Please post progress pictures as available.

BTW: With this last LFH17 build, I was breaking the artificial sinew, so switched to 60# black dacron kite line for stringer to frames, and 80# for gunnel to frames.

Steve C.