thanks for the pointers guys, good points in all.
i kite in shoreham england, so im always in waves and to start with ive been using the waves launch off,
i have been using a 125 lite wave TT (which is brilliant in flat water and really stiff), but recently bought a 132 f-one skate and my riding has improved drastically,
im thinking its probably a combination of the wave tipping the board and not learning back far enough just before and after the launch, plus my head direction.
mind you its not happening all the time just occasionally, but i am looking at the techniques for a back and front roll now so may help, ya never know
keep the jumps tips coming if anyone else has any probe or tips