Take a look at this video. It was film at our spot, it could be use to prove the superiority of any kite and say it was a very LW session but it is NOT
Yes it could be used for that..if there was only "one" rider out...
...but your video shows a couple of guys ripping in seemingly....... 2-4kn
My take is if you would put another kiter with same size LW kite in all those solo BS claims.....
...you would see both riders do equally well...(with similar board / weight / line length / experience)
..because the conditions are special....(not so much the kite itself... that needs advertising)
At my spots when conditions are like that the extensions are not needed...the wind is not that high
Kite can be parked at @45 degree angle on @25m lines and you have power
Warm wind "seems" to slide faster over the cold water..apparent wind power gets created...i think
Let me know the wind direction in the video....i find at my beach spots SSE-S-SSW is best for that