I may stand corrected, but I am under the impression that the 'formula' classes F16 and F18 are manufacturer-driven classes, and as such my statement stands.
In any case @BoK, you say that your example has manufacturer sourced parts, however mixed round.
However, Rice's Viper F16, Pedersen's NACRA F18 and Smith's NACRA 20 all have custom sails. I suppose then the question is whether the Formula classes are manufacturer driven or not (except for the NACRA 20 which has no claim to 'formula' status).
As a scorer, then, I say this distinction should be made clear in light of my earlier statement in regards non-factory sails.
It can get a little complex here but Portsmouth recognizes (somewhat loosely) the various rule sets and establishes a number for them. The Hobie Tiger was an example of this complication - Hobie maintained strict "Hobie" rules for the Tiger that were more restrictive than F18. Tiger sailors had a choice to race under the Hobie rules or F18 rules and Portsmouth (for a while anyway) recognized both classes.
F18 and F16 have handicap numbers for their formula classes and though some may have manufacturer specific numbers (I don't think they do now, though) the handicap number used depends on which rule the boat is complying with.
