The idea 5 to 10 years ago was to create a formula that could support a race circuit with H20's, N6.0's N20's and Mystere 6.0's at the foundation. The lower weight would drive development over time... Now, The only race boats that really survive in any numbers from that era are the N20's. The world has changed.. the development nature of the rule formula will fail in 2011 with the new wide carbon 20's on the market. I would narrow the focus of the rule.

The bottom line as I see it. ... you are trying to revive a class that would be somewhat like the F18's.. (8.5 beam = user friendly) but with a hull shape and power for crews... 380 and up. (Set the min crew weight to the level you need)

The state of the art niche is now owned by the N20c and the other carbon boats. A narrow boat will never be as efficient at 20 feet. You simply can't compete.

I would suggest an open sailmaker rule so that existing N20 owners can purchase what sails they want so long as they measure into the existing sail plan.

If you want to include some development (to keep things interesting over time)... lower the boat weight by 20 lbs to 400 lbs and allow new foils and any mast of the same dimensions as the alu and existing carbon sticks.

If the market for this boat.. ie teams 360 and up exists and thrives.. ... the F18 builders could just blow up their F18 hull shape to the 20 size (just like the origin of the N20). The class would then grow like the F18's with demand calling forth new designs.

A conservative approach would be to do the sailmaker changes in year one.... Race your circuit. Measure the adoption of the new sailmakers at the end. Re poll the fleet if they want changes in foils.