A lot of brain power went into that I'm sure.
The general concept I like, kayak powered by wind etc.
I would be worried about getting impaled on that pivoting rudder out front there.
Also you have all that extra equipment
a kayak, all that rigging on the kayak, AND a big friggen kite... I just don't get it.
You're basically replacing a simple kiteboard with a big heavy plastic kayak fitted with a bunch of complicated rigging. Talk about extra complications. I mean how do you even get all that in the water let alone launch it?
Why not just put a kiteboard on your feet?
WAY TO COMPLICATED FOR ME
I'm trying not to be negative... just giving MHO
When I got inspired to and started developing my idea I never had kayaks in mind but was thinking it to be an alternative propulsion for sailboats, as it doesn't require a keel, ballast or a wider hull, it would even work perfectly on any motor yacht, what is lacking is just the availability of big enough and automatically launch-able and land-able kites(there is hope that this might change, though).
The kayak is already my third prototype and I wanted to demonstrate with it, that my system is really completely heeling-FREE by attaching the biggest possible kite to one of the smallest possible boats. However it is great fun to ride this thing and when I am not in a hurry I definitely prefer the kayak over the kite board(certainly not being dispassionate as the inventor though)
Then there are certainly some advantages of a kayak over a kite board, for example the ability to give passengers the chance of getting carried away by kite power, see attachment.