Class membership is understood.

I would think results from the U.S based World Championships should count. I understand if they don't because it's a lot of foreign sailors and split fleets etc, but then maybe the 2011 Nationals results should be included since a nationals wasn't held in 2012?
http://www.abyc.org/upload/F18_World_Championship1.html

I would think things like the SE Area F18 Championship Would show up: http://www.twinhulls.com/springfever2012/12results1/

Also other big SE events like Tradewinds, Charlotte Harbor etc.