Pump me up wrote: This current video shows, quite clearly, that the Epic Infinity cannot fly in 7/8 knots, let alone "perform" (on a SUP - or whatever), in "2-4 knots".
To me what is clear is two kiters, V3 and sup, 18m and wide race board. Both started well, one makes it back the other doesn't.
The rest we have to guess a little. We have to guess the wind speeds:
when V3 left the beach,
when V3 hit the water,
when 18 left beach,
when 18 did the first turn
The wind speeds at those points in time could be very very different.
I notice the V3 moving nicely until a certain distance from shore.
I notice where V3 goes down water is very glassy, like there's a wind line a little ways off shore.
I notice the 18m quickly turns around at that same point (distance from shore) where the V3 went down.
If I was kiting there I would have turned around much sooner because it's fairly clear from the video the winds are stronger
the closer you get to shore and weaken when you get out there.
You really can't refute any claim made by Epic by what you see in this video IMO. All it shows is the V3
moving from shore nicely in very very light winds, then going down due to even lighter winds (glassy water is visual clue there)
Without knowing what the wind speeds are at those crucial times you can't really come to any conclusions.
It's really back to the drawing board for you two for now
You could always make your own video of the V3 performance.
In any case keep those vids coming
(edit: spelling mistake, never fails when I don't proof read)