I'll be leaving San Jose at...crap, haven't decided yet, but will be taking this route:
http://tinyurl.com/kussme. If you want to park on the island, I'd plan on being there no later than 8:30 - 9 on Sunday. I need to stop by the Seaside Embassy Suites to pick up my ticket. I've taken the Coyote Creek golf course exit before off of 101 as a meeting point - there is plenty of space off the exit and nothing else around there (i.e. no gas stations).
Slow down on 101 after the Gilroy outlets till you merge onto 156, and go especially slow on Hwy 1. The CHP will be like snipers that weekend - it's huntin' time for them.