As you appear to believe that 20kg does not matter, how about you get the A class to add 15kg (about the same %) to their all up weight! If you can do this, and do the same in the F18 fleet I'll support you in adding 20kg to the F16 min weight.
Lets discuss this again when the A class is sailing at 90kg and the F18 at 195kg.
I have a better suggestion: How about I take an F16 and add 20kg to it and see how it goes.... O hang on.... That would be a Viper! And guess what??!! its still faster than all the other F16's!!
