Dudley Dix is a South African Naval Architect with extensive experience in homebuilt plywood
designs. Many of them incorporate a rounded-chine “constant camber” system that avoids the hard chines that increase wetted surface and make many plywood
boats pound in a seaway. He has a reputation for fast boats that hold up and perform well in conditions that prevail off the Cape of Good Hope. (Nasty is putting it mildly.) IIRC he now works out of Annapolis
, USA. WoodenBoat has had several articles both about him and about his designs and building method. One was about a 38’ boat built in a driveway in landlocked Colorado and trucked to the coast to launch when finished. Another was about one he built himself in his back yard. His designs would definitely be worth checking out. Builders who seek out his plans are likely to be keen to put them together properly, but of course, every boat is different.