Can I ask how you did the last one? reminds me of the rotoscoping style of the Aaron Hadlow videos
Not sure if a flash full power at full zoom could give a little fill in at closer distances (3rd shot).
I'd maybe brighten up the kite in the second shot to make it more the hero of the shot perhaps?
It's a heck of a sport to photograph - being that the kite's on a >20m set of lines - do you compose without the kite and crop in (and so need to be close to the action or have a biiig focal length) or go wide enough to get the kite, but have the subject smaller in the frame...
I guess kiteloops or very windy conditions help as the kiter will have the kite much lower.
What's the majority of photographers for Kitesurf magazine etc use? I guess at the warmer exotic locales, you can get the rider closer to the shore, but maybe there's some places nearby you can get that too?