Hi Andrew
THANKS for the always great posts.
Here is a link to the current N A F-20 rules
http://www.lakelaniersailing.com/f20class/ They are basic and hopefully good folks will get involved . Any can start one in your area and sailing club to help promote F-racing and define and shape these rules further as needed along with growth in the class.
If you check the F-20 forum there are a list of 20 ft boats that all fit into the rule ,-it includes all 20 ft 8.5 beam production cats .
Start a fleet of F-20S IN YOUR AREA !!
HAPPY HOLIDAYS
Carl