You have this backwards. But, I would like to hear an answer, why should "they" dislike the F16?

F18s have always been invited to GYC regattas. The regatta in question was held at GYC in April and advertised through all the usual channels. In the past that amount of notice has produced a significant F18 presence. This year only 1 F18 was not a GYC member. Perhaps you should ask them why. They may be able to shed more light on the poor turnout.