Again, I believe the Wave sail is pretty simple, as is the boat. What I love about the class is not so much the HORSE, but rather the RIDER.
Having your sail set perfectly at all times will help your speed. And as I like to stress when I teach my sailing seminars, speed does help, but not as much as one might think. Folks pay a few hundred dollars to me for those seminars, and so I point out that instead of paying me, if you instead went to www.OnLineMarineStore.com or West Marine, and spent that money for a "Go-Fast" item.
And suppose it made your boat 4 boat lengths faster over a mile (probably not, however).
What good would it do if you were:
1. Not on the start line in good position (lose 15 Boat Lengths)
2. Unfavored end of the start line (lose 7 BLs)
3. Sailed to the unfavored side of the course (9 BLs)
4. Overstood the layline (25 BLs)
5. Tacked on lifts, and held headers -- out of phase (25BLs)
6. Blew a tack and went into irons (20BL)
7. Did not enter wide, exit close at mark (30 BLs)
8. Finish at the unfavored end of the line (6BLs)

And the list goes on and on.

In other words, rather than worry so much about the sail and trying to fix every little thing, you might want to fix the "...loose NUT on the TILLER."
Rick