Ha! Nice link Mike. I love the construction method: "I built it on the ceiling of my basement. I screwed some planking across the floor joists and then screwed blocks in place at each rib location. With a water level (20 ft. of tygon tubing filled with water) I marked the vertical location of each rib..."
So much for strongbacks internal, external or otherwise! Guess there's more than one way to skin a kayak :-)

Bill