Lesson 1: If it's so light it's a challenge to get out past the breakers, don't go past the breakers.
...I had my 12m rigged, and I barely got it in the air. I was amazed people were actually out riding.
Lesson 2: If it starts lulling and you're out in the Shark Pit, get in quick. The Shark Pit on an ebb tide is potentially unswimmable back to the beach. The ocean current flows south along Dillon Beach at a good clip whether it's ebbing or flooding, then flows into Tomales Bay if it's flooding or curves out towards the open ocean if it's ebbing. If you can't get to the beach before hitting the current coming out of the bay, start swimming for the Pt. Reyes side. Having buddies to help may prevent a CG rescue, but even they may not be able to drag you back against the current, and dropping you on the Pt Reyes side may be their only option. It's about a six mile hike back to the road from over there, and over an hour drive for your buddies to go around and pick you up. Your buddies could also rent a skiff at Lawson's Landing to go pick you up.
Any other lessons to learn here?