I would consider narrowing my Supercat 20 to a 10' beam to fit a box rule but I would never drop it all the way down to 8' 6". The Tornado and the new Nacra 20 are both 10' wide.

There are enough 8' 6" wide boats out there. If you are going to have a F20, you really need to separate it from the crowd. Many have built tilt trailers to make transport easier and we are looking to build one in the near future.