Hi Dave

We saw a number of different 20 ft designs with chutes added win distance races this past season , a good indication of the potential all these boats have as they are modified and improved .
Just as with all Formula classes good spin -snuffer systems are needed to be competitive in buoys racing ,-larger chutes with not perfected snuff systems will require refinement on all boats ,-better systems will be developed.
Also just as in other Formula classes differences in hull shape will slightly favor one type over another.These differences will not offset a good start ,tactical sailing and going to the favored wind velocity and shift , your talking seconds in a weather leg maybe. A boat at speed travels its own length in approx one second.Again a good start often places you 10 length ahead of competition .
The I-20 hull shape with its large buoyant forward sections has a weakness in light to med air speed in waves and choppy conditions being bounced around much more as compared to the 6/0 or H-type more knifelike bow and forward sections.

Fun stuff -we will all learn so much from this type of racing -
Happy Holidays
Carl