There are serveral courses being setup if you search "motionbased.com" for al-kite-a and race you can see some of the course by looking at my GPS track.
Here is link to one of the races on May 1 using Google maps and my GPS data.
http://maps.google.com/maps/ms?ie=UTF8& ... 18bb3cb0e3
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This is the most common set up we have in SF.
We start by race up wind to a mark.
Then down wind to a mark , The finish line is about half the length of the starting line and you can not go through it on the down wind leg.
I would note that we are very lucky, the people running our races are paid professional and setup courses and run sailboat races for a living.