On the N20, what I've learned so far:

1) Most important, after the push, make sure you GET ON THE BOAT *cough*

2) Keep the jib travelled in but not too tight and main center-traveled but loose. Don't want it to weathervane after a hit from a wave. The trim on the jib is to give the leech a little more curve, and thus a bit more oomph.

3) crew weight either at the front beam or in front hanging on for dear life. There's no shame in paddling either.

4) As the wave approaches, pinch a little but not so much that you'll hit it square or you get into the wind. The wave will push your bows down and help you get powered through the drag of the wave. If you're good, then you can sheet the main in real quick to get powered back up but make sure its loose again before hitting the next wave.

5) Don't put your rudders down until you clear the breakers.