Were the hatch boards in place? The picture indicates that the hatchway is large. And in any kind of seas they should have had it closed up. And then possibility they may not have sunk.
No, the hatchboards were not in place. And yes, having them in place could possibly have saved the boat. I included that in "Lessons Learned."
Note that the article in "The Favored End" is just an excerpt from the original article in "Great Lakes Sailor." See the full article here:
MacgregorOwners.com - 23
Don't be misled by the picture. The staff artist at the magazine used a little "artistic freedom" in his depiction. There were no seas of any size at all. Chiquita went down on a small inland lake. Even if the wind builds to 40+ knots there is not enough fetch for waves much bigger than 2 ft. Our biggest waves actually come from powerboat wakes.

It was the wind, not waves, that caused the capsize. Local law enforcement called it "wind sheer."
Of course there are things I coulda shoulda done that would have avoided the situation altogether; I just never saw it coming. That's why I wrote the article and included the section "Lessons Learned." I'm older and (I think) wiser now but, like Chiquita, I am also a "work in progress."