With regard to other options. I think a smart way to HAVE done it was long the mystere 4.3 lines. HOWEVER they did not enter that design or a entlarge version so the point is mute. And yes I do think that the M4.3 is a little small for 14-18 years olds.
The other thing I want to say is that all limits considered I agree with John Williams that from what was discussed in this thread I don't feel that SAF missed the mark. It may not be perfect but considering the entered boats it may be the best choice anyway.
Wouter