4 catamarans are currently F-20 -The Inter 20 -F-20 Storm -UK -- Ventilo 20 -8.3 beam 385LB version and Hobie Fox -
Several others are US Formula 20 compliant per dispensation or can be modified up to max specs.
The Nacra 6/0 w NE kite -Hobie 20 -Mystere 6/0 -
PLUS ANY 20FT range cat could be modified to fit the US FORMULA 20 rule as proposed ,-ARC 21 coverted to 20 ft L -
the P-19 - Several other EXISTING 20s could also race F-20 provided they comply by meeting standard Length Beam Weight and sail areas as specified which are all identical and based on the US version Inter 20s specifications .

UK Catsailors site has this link to Formula 20 racing
http://www.catamaran.co.uk/IF20/IF20.htm

It would be great to have some of the past UK and Euro teams enter next years Tybee 500 AS WELL as THE aussie teams already committed plus numerous US sailors now sailing -racing Hobies -N-6/0S -Mysteres -H-Foxes -and Arc SC 20S --P-19s plus others .
These added potential cats in Formula 20 ACCOMODATE a broad spectrum and class of 20 sailors that include potential factory and dealer involvement in the event and in larger context ,-more in the sport of catamaran racing just as F-18 has helped accomplish as per now accepted Formula 18 Tiger and Nacra F-18S plus NUMEROUS OTHERS -.
Formula 20 also similarly consists of an easily recognizable class based on tried and true Formula and box rule concepts of the same LENGTH WEIGHT BEAM AND SAIL AREA as it's basis ,-
sail 6000 -7000-8000--or is it 8500 now
Carl