We set the class rules up similar to the early Lasers. You are allowed 8' of line to downhaul. Mary described it quite nicely.
We have finally talked Calvert sails into using a large grommete for the tack of the sail in order to accomodate the line going through it three times.
Calvert might start using a device similar to windsurfers in the future where there will be no overlay of line.

While the Wave appears to have a wing-type mast, it is not much larger on the major axis than it is on the minor axis, making it almost round
When we first did R&D for Calvert we treated the mast as a we would any other cat with a rotating mast -- rotate the mast so it is a part and extension of the sail area.
However, the almost round mast of the Wave it not very effective in doing this. So, we started making sails as if it had a fixed stick -- moving the draft a bit farther aft, and voila! It was much faster and better.
So, while the mast should be rotated, it does not really help the speed of the boat.
I made the mistake of putting Mclube on the rotator ball. Then when I sheeted it straigtened out the mast fore and aft. Now I just leave it sticky. Works better that way,
Rick