I'm 95kg and find they like to be well powered to jump properly, that is jumping over 5m and gliding around 5sec. The 13m really starts to work for me over 20 knots and the 9m is a weapon in 35kn, esp down here in the roaring 40's.
No other kite i've flown glides like this kite does, perhaps others have been as high (a lot of C kites) but nothing else has given me that crazy flying feeling this kite does.
I love getting up high and swinging the thing to my right, then left, then right and sort of coming into to land like some kind of freaky bird. Punchy gusty winds will extend the hang often putting you back in the elevator and sending you on the way up to the impenetrable sphincter level