Thank you for the analysis Lou. Was going to go through the same exercise myself this morning, before doing so I spent quite some time viewing Fred Hayes's video. Looks like they were dragging the tail through (or just over) the water for some 18 seconds or about 10 plane lengths, between 550 and 650 meters, prior to hitting the sea wall.

Going to have an interesting few hours replicating that. Crash detection OFF!