How did do you bend the ribs (I know willow rod's are soft, or maybe steam bent; what I meant was how do you get the gradually changing degrees of bend to flow smoothly? Did you do it freehand and by eye or did you have a drawing of each cross section to work to?) Also how tricky is it to get the skin tight instead of baggy?From the look of the rabbit stick pictures it was quite an effort pushing pulling levering etc! Maybe you could of used a transparent skin material so the frame would still be visible?
It is relatively easy to do the ribs. When fresh the willow bends very easily, you just have to be careful to bend them gently so they don't snap. You just have a few spares in case.
The first thing to make in these boats are the two long, thicker bits that give the shape of the boat when looking down on it. On the underside you drill 1/2" approx holes a hand span apart (the willow ribs go into those holes at both ends)
Next you put the thwarts, that's the bits going across, keeping the 2 gunnels apart. Then you place a long stiff batten where the keel is on the centreline keeping that long batten at the depth of the hull, that give you 3 points in between which you bend your willow ribs.
You start on the middle of the boat with the biggest rib, then go down toward each end in turn, alternating the ribs, thick end and thin end. Because of the 3 points between which you bend the ribs is it then relatively easy to fit them by eye.
The canvas is hard work on the hands because you need to pull hard on it to keep it from being baggy. If you work on your own it requires some carpet tacks to keep in in place on the gunnels while you gradually tighten it around the bottom of the boat.The whole skin is one piece of canvas, which is sewn along the centre line ridge on deck and around the cockpit rim. When all sewn up, you can take the tacks out, wet the canvas which makes it shrink somewhat, therefore a bit tighter. When dry you can paint it with ordinary oil based house paint, or linseed oil. I think the canvas is a lot lighter, easier to live with than the skins, as they need regular, careful drying and oiling to keep then from smelling like a dead rat in the sun
Hope that makes sense.