Re: Heeling free kite rig & prototype-video
SkySails use a telescoping mast tied to a specially designed captive reel, and launching system. Even with a fixed vertical mast they don't report any significant heeling.
Last time I looked into them they had a small rig in the works for yachts, and I think have installed one on a 150' yacht, but I can't remember the details off hand. Their large kites are powering ocean going ships of a number of different types already.
I am not sure exacally what you are trying to patent though. There are hundreds of people attaching kites to kayaks, small catamarans, monohulls, canoes, ect. I would be interested in knowing what specifically you have added though.