Mick,
The Sea Wind, as Verlen said, "has no square corners to catch the wind or water." It is hydrodynamically clean (read "streamlined"). Plus the hull is tall and capable of withstanding almost any water short of a tsunami or typhoon. Has been paddled UP (yes, that's up) the Grand Canyon. Has traveled basically from the north to south tip of the continent. A true swamp-to-sea boat.
Caught mid-way, my controlled rolling exit looks pretty clumsy. Rather than try to stand or rise from the boat, I elected to roll out onto a log, and then stand up. It's a controlled exit.
The stumble and fall came about 15 seconds later. I think slippery rocks let my foot slide about 10" and I stumbled backwards about 8 feet and promptly fell on my arse - ker SPLASH! Bruised both my bum and my dignity.