One guy even made the front page because he went over a cliff, and was severely injured with at least one broken leg that I can recall. His friends noticed that he did not come back the following Monday, and on Wednesday notified authorities he was missing. They finally found him a couple of days later when after going back and forth along Hwy 9, one of them happened to stop over a particularly narrow section where he noticed a long skid mark leading to a broken guardrail and thought he heard something when he called out the guys name. They wound up having to chopper the guy out -and only later found the bike.
About thirty feet straight up, lodged in a tree.
(C)San Jose Mercury News, about... '88 or so.
I used to work with a guy in the Bay Area that was a motor cop who patrolled the Woodside area, and he had a lot of biker crash stories to tell. They usually featured the bike or the rider in a tree, and the other party up to 300 ft. away.