I should give up trying to convince you, or6.
One last attempt, because I am gracious and patient, and there's no wind out there.
What do you think your anemometer would read if you sat in a dinghy or whatever in a strong current on a windless day? I suspect you'd be reading precisely the speed of the said current. You can't be bothered to try, or to imagine? Then grab your skateboard on a windless day and push some speed (I insist on the required conditions) and check your anemometer. If it reads zero knots, then and only then you'd have scepticism would have been justified, but that won't happen. The skateboard, the dinghy, the kiteboarder sitting in the current, it's all the same.
The jetski is just to get you in the current. Beats swimming. And to get you back ashore after the demonstration. You'd be let go from it once there.
or6 wrote:No hard feelings Alex, but that doesn't quite convince me. Like I said; theoretically, launching off the beach when you are in a fast current is possible. When the kite is in the water with you, there is no velocity difference. Using a Jetski would be cheating...could be fun, go for it!