Something that size, you might find a jet-ski trailer could be modified to suit your needs.
Mount 2×8’s on the long side not the ends, use outdoor carpet to cover the boards and use straps to hold down the back end of the boat to the trailer to prevent it from bouncing up and down.
Maybe mount a bow eye to the nose of the boat, to hold the front end down, but don’t overtighten the winch strap or it will do damage to the bow..
That is how we do it with the bigger wooden boats..
Richard
http://www.richardsoutboardtools.com
classicomctools@gmail.com
