Trail Cafe: Picture Page - Building a Multi-Chine Tom Yost PVC Skin on Wood Frame Kayak - Pic Num: 9
Picture Credit: M. Tanton
Another shot of jig for drawing the chines at 3/4" and the keel at 1". This shows the alignment which matches Tom's drawing/instructions on www.yostwerks.org (the .com offical site seems to be offline)