I'm not worried, in my opinion if the Nacra 17 is selected as the Olympic equipment the impact to the F18 class would be about the same as if the F16 (Viper) was selected. In my opinion if the Viper is selected the F16 class would take a bigger hit than if the Nacra 17 is selected. First thing that comes to mind would be fiddling with the class rules.

As for the class moving to a lower weight F18... still not worried, the F18HT isn't exactly posting huge numbers on the starting lines.

Is the multihull community (besides Bob) jonesing to get back into a SMOD class? There are a LOT of people that have been soured on the concept and formula has become the norm. As sexy and attractive as the Nacra 17 is it will have it's own baggage to deal with. No sleep lost here.