I heard about it in a different way. In the Dogtown and Z-Boys documentary, it was explained that after the park fell into ruin, the Dogtown surfers favored the waves that broke near the POP pier. There was all sorts of wreckage from the park that would impale them if they got careless, or any outsiders that weren't down with the locals who knew where the hazards were. This was the crew that begat all the original skaters; Tony Alva et. al.
There was a marked difference between the pics in the post and the footage I saw. It couldn't have been more than like 10 years, wtf?