I've built one and you can find it here:

http://paddleandoar.com/notebook/recovery/index.html

As for building it to your body, the answer is, yes you should. Pretty much. Remember that in building it to your body you are talking about beam, length, and spacing of ribs and frames. As for beam, build it according to what you are comfortable with. Width=stability. As for length, forget about that because this is not a "3 arm lengths + 16in." boat. The deck beams are for your back, feet, and the masik, so do those. The rib spacing are for your but and heels so do those.

Cheers,

Paul M