I remember Jono Stevens jacked his back on OBJ back before he went out to Santa Cruz and got into surf kayaking. This would've been back in the early oughts. Seems like there are lots of injuries there, hence the other name, "Oh be careful."
Nothing in the world is more yielding and gentle than water. Yet it has no equal for conquering the resistant and tough. The flexible can overcome the unbending; the soft can overcome the hard. - Lao Tse