Hi Jay

Ya ,like the I-20 also ,-have raced it in 3 Worrells and a Tybee ,Its come through all but one beach called Jensen ,with 3 broken rudders trying to get out through the surf ,not to mention a squashed team-mate -{see dave under boat pic }
think we are really missing the boat by not yet having a large Formula 2o CLASS Organization and the great larger group as the F-18s will soon have with N-F-18s -Tigers -Mysteres etc etc all to race in large groups ,and able to make improvements and modification as they choose within class specs. {like rudders} .
We need a major concensis from numerous interested 20 owners that will commit to it ,-Barry on the East Coast has the first F-20 fleet racing going ,--congrates , Any can start one just by concensis of 20 sailors in your area .
After the example of 18s this year it will become easier for many to understand and see the benifits of it .

Also raced the H-21 with wings ,-way back in Prosail events in 88,
They experimented and eliminated most rules so it was as you mentioned like {bulldozing through } or became more like the Chariot races of ancient Rome.
The Miami race was pretty funny with about 20 H-21s wings locked up around the first A mark set on a reach from the start ,--it did not last long after that for numerous reasons.
They -wings ,are really nice though once used to them .
effectively adding beam and get you up off the water and able to see better , a little dryer too ,-
A different type of larger wing is needed though to make them worth the added weight vs increase in sail area.
The I-20 with its flat large hull sections gets close to planning at times ,-believe a little more sail area power and a more forward angled larger spin would get up and plane and provide a good jump in speed ,that combined with forward foils canted features and other design aspects noted for the {ideal cat design} -Most fun when your doing those distance races ,have the kite up and the wind just keeps building and building through the day -
My ideal would be that next step in design to an ultimate planning type hull and more powerfull sailplan and more beam or wings to hold it down.
Some of my best memories are flying off the back of wavetops and surfing down the backs of big Atlantic swells ,spin up strapped in trapped off the stern ,having a great time as helm or crew.
That,s catsailing yeeeehaaa