Here it is ... the core layer poly boned and corded. I'm using a stiff unbleached canvas as the core layer, poly boning from Hancock (half off sale) and hemp craft cord from Hobby Lobby to stabilize the poly boning which has a habit of molding to the body shape when worn (due to body heat).
I ended up trying the boning scheme from the pattern. Why not? I'm playing around with all kinds of ideas I haven't tried on this one. As I've mentioned, it takes little fabric and relatively little time to make. The front has 4 cords next to the poly boning, and the back has 6 cords on each side. The side bones have two on each side. Oh - that's a strip of buckram under the boning at the center front where the eyelets will go. Underneath the core layer is the outer fasion fabric layer: a nice cotton duck that softened up in the wash. I only have a 1/4 yd of it on this piece, so I'll be able to see just how little fabric this pattern uses per layer.