It would be easy to do a full model in balsa wood, with some frames. You can buy small outboards which are electric or gas to power the boat. There seem to be less of these now, than there were 20 to 30 years ago.
As for a half model--even easier I have made half models of some of the sail boats my father and I have owned. I have used solid bass wood, but there are other woods which are easily worked. For most models you don't need scale plans, just a good eye can do it, along with the basic dimensions, pulled off a photo.
I had a friend who made a one off copy of a fatty Knees dinghy, 1" scale, and then made a mold and produced a number of hulls, finished with teak rails etc for his friends who owned or had owned these dinghies. The same could be done with the C Dory hull, if there was enough of a demand, but the price might be high because of the labor of both buliding the mold and boat parts.
Good winter project for someone who has the time!