In my Sailing Seminars for Laser and Sunfish my last two guests experts have been on the Olympic team and all the hot shots sail by the lee, then by the luff, and back. The zig zag down the course without tacking and it is very fast.

The idea is to always keep a flow across the back of the mainsail.., no matter which direction.

I have found that it can sometimes work on the Wave, but not with the success of the Laser.
Rick