It wouldn't have made much difference though, as the rear bulkhead cracked under the pressure of the splashdown.
And this was probably the best executed ditching possible, in the best possible circumstances (no waves to speak of, what I remember from the videos I've seen.)
It always makes me smile when I'm reading through the seatpocket safety card, and see pictures of the plane after ditching, where everybody calmly takes of the high-heels and steps into the slide doubling as a liferaft. The waves drawn on these cards are no more than 10cm high. In the North Atlantic? Are you kidding?