And there's another N20 that I know is doing the race that isn't on the list.
If the F18's are going to claim the distance moniker - then they at least need to show up at the premier distance event in NA.
And - if what you say is true about the prices being nearly the same on the N20 / F20, then we have a bigger problem than just sail plan development.
Hadn't looked at this year's entry list (a painful thing to do if you can't make it...). My statement was based on last year, given their success at Tybee and GT. The boats can do it. Throw in the feeling of things at the Tybee awards ceremony. But, if they aren't showing up this year, then the premier races have a vested interest in the life of the N-20 class as well.
Last new price I heard for a N-20 was $27k, that was last year. Given that the last quote I heard for a carbon mast was $11k... If the $30k mentioned for the F20 is right, that's close enough to maybe cause issues.