Hey DR,
I also did a model of the Coot between 8 and 10 years ago. You might possibly say it was my first build. Scaled it to be about 3' in length. I tried to include every detail that I could. The companionway, rudder and centerboard are all functional. I made the dead-eyes, made cleats and even made blocks out of brass and solder. The sails did not turn out well as I would have liked and I lost interest it the finest of the details. I dug it out of storage, rerigged it and took a couple of pictures. The jib club and mainsail are missing and I never rigged the sheets for the main and mizzen. Hope you enjoy the pics and don't think I'm trying to upstage you.
Paul, how were the rudders typically modified. I assume for a higher A/R.