I think these rules already favour one setup over all others.

In my view the optimal F104 will look like this :

Length : 5.50 mtr
width : 2.55 mtr
Weight : 135 kg
mast height ; 8.5 mtr (same as F16's now)
mainsail area : 14.0 sq. mtr.
mainsail luff length : 8.0 mtr
mainsail aspect ratio : 4.6 (F18 = 4.3 , F16 = 4.4)
jib area : 3.5 sq. mtr. (= 25 % of mainsail; as is the case with F18's and F16's)
Jib luff : 5.25 mtr
Spinnaker area : 15 sq. mtr.
Spinnaker luff : 7.00 mtr (same as F16's now)
Aspect ratio spi : 3.3
Area board : 0.16
luff length board : 0.80 mtr.
width board : 0.20 mtr
aspect ratio board : 4.0

What I don't understand is why the Spitfire class, Boulogne Evolution and AHPC with their Viper (all 16 footers) are opening themselves up to competition from this ideal F104 setup that is 18 foot long. Same for Hobie with their 17 footer FX-extreme.

Afterall, in the publics eye hull length is King !

Wouter