My own version of trailer. starting with a Harbor freight 4x4 1000lb trailer with the 12" wheels. weld on a 14.5' extension to tung bolt on cross bars for cradles good paint job bolt on keel wheel. bolt on third wheel. support front bow with brace and go. the good thing about doing it this way instead of from scratch is HB gives me a title witch in illinois a home built trailer costs more to get licensed. heres some pics
thanks to Sun E sailer for some of the ideas like the keel wheel on back. really helps with loading and unloading. total cost $500 with cradles