So what windspeed are you finding that the Naish Fly drops out of the air?
I have not had the Fly long enough. Only one week in which I kited in sub-whitecaps on an Underground FLX 134. Super fun, and fast turning kite (for it's size).
As soon as I get some more time with this kite, and I have my Kestrel handy, I will have some answers.