Gareth: The numbers does say something about platform stiffness, and the argument was about what advantages time&technology has brought. I think those numbers says something about the 'old technology' beeing adequate today as well. At least, the timber hulls does not appear to be less stiff than the space age Marstrøm Tornado..

Your argument about beams, beam attachment and trampoline are of course a good one, but not exactly new technology.

Unless the hulls are measured in a scientific way, or we are willing to trust the sailors statements, we will probably not know how stiff the hulls are.