Before LA and Long Beach Harbor yacht racing was ruined by the creation of the Pier 300 and 400 land mass, nearly every race used the Point Fermin Buoy as a weather mark and that rock was almost always right on the starboard tack lay line. Even though my father had raced past the rock hundreds of times, knew it well and I do not recall ever being on a boat that hit it, it still scared me every time we sailed past. So at 16, after seeing and hearing a dozen or so boats hit it, some really hard, I developed a total distain for that damn rock. Nothing makes a sound like an aluminum boat bouncing off that rock, with the wire rope halyards smacking the inside of the aluminum mast amplifying and prolonging the noise. So one calm day, I took a dingy, my mask and snorkel and did some reconnaissance (found lots of bottom paint left behind). After locating the two high spots on the rock, I lined them up with the Cabrillo cliff face and the background and thereafter could tell when we were within the 30 foot wide danger zone coming out from the kelp line on starboard tack. The downside was that I was now considered a Point Fermin rock expert, and therefore responsible for not hitting it.Yeah. we found that one in 1980 with the keel of a Choate-40. Not fun going from 7 to dead stop.