Some people build a little transom on the stern to mount the rudder. I suggest building the boat as if you were not planning on a rudder, then mount it when you are done. There is really nothing you need to do any different beyond using slightly more material in your endpour.

: My wife insists on a rudder on the Guillemot I'm just beginning to build. I
: am just laying up the strongback, and thought that it might be preferable
: to begin with the rudder in mind and alter the stern conformation at this
: point rather than bucking it off later.

: Has anyone any experience on this?