From the various reports it sounds like there were TWO sailors on the cat.
There is no confirmation that it was a Hobie. Lots of people use that word generically to refer to any beach cat.
It sounds like the boat was only 200 yards offshore when it capsized, and since it washed ashore 20 minutes later, it sounds like there was an onshore wind, which is at least one good thing. But if the boat washed ashore, one would think the sailors would wash ashore, too, whether dead or alive.
What is the water temperature off Santa Barbara this time of year?