you guys best formulate what you want to do with the boats.

For example : an ultimate distance racers has other requirements than the ultimate bouy racer.

Personally I think that lightweight on a 20 footer is a case of diminishing returns. Pretty soon you are sailing on a pair of needles with lots of wetted surface area.

But anyhow a mast height limit could be a smart rule to have. This appears to be a really "pain-in-the-neck" item if it can't be standardized and produced in numbers.

and there are other common considerations like that.

And as I wrote some years back. Don't let yourself get swayed away with wide open rules that will, on its own, gravitate towards the optimal setup after several (or many) experiments. This is simply not going to happen. Everybody loves extreme experiments untill they have to build one of these themselfs. End result, no experimentation, and most will just look for a different class.

The trick is to gether all the past experience and harnass this known potential in the class rules while leaving enough room for gradual refinement and improvement.

Wouter