Looks like a messed up attempt to jump the pier, with clearly quite a few people on the pier in/close to the flight path. Even if he took off well his board could slip off and hit a pedestrian on the pier. He puts the public at risk here. Hope he recovers well, we have all done silly things from tim...
Chlorine is water is so low and generally evaporated off by the time it comes out a tap it would have zero effect of the ripstop, it's an old myth that.
Just measured my ATB 55 - As per "Dirk's" measurements - settings allow for 50cm on outer setting and 45cm on inner. I have never had any issues with slow turning speed on the 50cm setting, I ride my 14m Dash on that and it's plenty fast. Naish don't do a bigger bar.
I would go for a 8-9m Naish Pivot, superb boosting kite, fast turning (unlike the dog slow turning speed of the Edge ), super stable and great wind range. The Pivot is just a great fun kite.