I know where Half Moon Bay is...still trying to recall Drake.
It's still difficult for me to imagine a boat-destroying accident on such a good day and with such an experienced skipper, who has (had?) lifetime knowledge of the area.
I still suspect self-induced skullduggery.
Drakes Bay is about 25 nm north of the gate. Tucked in right behind Pt. Reyes. Not a usual destination at this time of year because while it's protected from westerlies and northerlies, it is open to storm-generated southerlies.