ISPI, I agree the Flow is very grunty, was out in 15knts, cross/onshore, outgoing tide, open beach, yesterday morn, I had my 08 Flow 10m and 130 board, weigh 82 kg, very average kiter.

Only one other kite out, a 14m TD (first model i believe) 138 board, guy probably similar weight and better kiter, I was powered up and stayed upwind, the other kiter struggled a bit and even went downwind, the scene confused a mate watching from shore !! I lost upwind capability when wind dropped to 10-12 knts.
And yes they are fun in waves, I was letting it drift and able to surf down the line and slam the lip (all 1' of it !!) in the low winds yesterday.
I like the way it flys now, I find it turns very fast and I havent experimeted with bridle adjustments/settings yet but am curious, anyone else experimented ?
Was going to upgrade to a 09 kite but might just keep it another year !