I am very addicted north sea surfer and sailor (Netherlands) and this winter I built a catamaran based on the old Prindle-15 measures. But ofcourse with a number of improvements, like more volume , wider beam (2.5 m) ,open net trampoline, flat standing place on the sides when in the trapeze, etc.
I built the two hulls like surfboards: handshaped foam with a strong laminate of glass, kevlar and carbon. Hull weight each 27 kg. And ofcourse unsinkable.
Even the beams and the rudders and casing I made myself from wood and laminate. Beams were a problem with regard to stiffness. But I ended with a frontbeam of 2.50 m with no dolphin striker!! And it holds on a choppy bumpy sea.

Is there anyone else who has tride something like this also?