This problem of the tramp acting as a sail still?! This is a real problem with catamarans that has never been addressed, IMO. I don't care how good you are at boat-righting techniques if the boat is going bye-bye.

Maybe a righting bag should double as a drogue somehow, as Undecided mentioned?

Maybe tramps should have a quick release?

Maybe some way built in to assist in swimming the boat into the wind?

While these guys made lots of potentially life-threatening mistakes in preparation to sail and in choice of location to sail, the moment of life-threatening crisis didn't start until one person was left swimming while the boat drifted off.

Being tethered to a boat is a dangerous option...