Hello Martin and Paul
If you want a simple yacht….why not something new like a ………….PLANK YACHT?
Have a look at at the "Free flooding" forum and give it some thought?
I`ll start you off……..Hull 12" long using 1" timber……….keel blade 1 1/2" wide by 1/8" thick by about 8" deep with a piece of lead at the bottom….easy peasy
Fasten a lidded plastic box on top…with the RC gear inside……..wires out for the rudder.
Make a simple sail and mast and the job`s a good `un?
Hope you like the idea?……..I do!
Cheers…………………….Plankman