So
No restrictions on materials.
No restrictions on boards of any type.
No restrictions on rig except that you HAVE to have a jib it appears (sorry M20 owners - guess you could always build a wing)
No problems with extending the rudder appendage off the stern like they did in the C-cats.
No restrictions on trapping racks or wings (not the wing sails)
I mean, this is pretty much an arms war if you ask me.