You can't state that without including some quantification.
Just repeating what I've been told by some one who knows cats well.
Wasn't the mast section of the Fx-1 too stiff to tune the sail adequately for a single hander? Never sailed one seriouly but was is your expierience with it?
Yes, it was too stiff, barn pole stiff in fact. I wasn't clear I guess, I was thinking more just the hulls/beams, and not neccessarily the rig. Although a flexible set of blades/rudders doesn't sound too appealling either.