Largest trailerable sailboat
Max beam to trailer is 8''0" I think you can go up to 10'' without a permit, however you have to have a banner designating oversize load. i also think there are a lot of variations state by state on this. C&C did build a boat in the 70''s called a "mega 30" that was specifically designed to trailer. it had a retracable bulb via elec motor. A friend had one and he loved it. however he said that if the battery is dead it takes hundreds of turns on the hand crank to raise or lower the keel. I believe that Seidelman also designed a 30 for trailering. don''t know anything about the keel though.