Clemco,
It seems that the class6 rules may no longer apply, the rules it seems have been replaced by these rules..... although NO OFFICIAL notifiaction has come from ALSA.
This is a copy posted a few weeks ago.
These rules were based on a small group in NALSA.(North American Land Sailing Assn.)
There are some odd things in them like weight limits.
If you have a close look at all the figures the most
practical division if the Mini rules would be M3 chassis, and with a change of sail it could be sailed as M3,M2 or M1.
If you built a specific M2 or M1 yacht it couldn't be sailed in the class below it as the physical size would be to big regardless of sail size.
M3 fits the size of the Lefroy Mini and Blokart with the appropriate sails.
M2 and M1 I feel would be to big for carparks and beginners to landsailing.
You are correct that the class6 rules did allow for building of great small yachts its just a pitty that people were more concerned about the
maxium dimensions rather than the overall concept of the class.