Having searched on the internet and NOT found kayaksailor.com, I'm really glad you posted your pics so that we could see the logo.
The guy has an interesting product, and an interesting kayaking blog
His sail kit isn't cheap, and isn't specifically designed for Hobies, yet it seems to have all the sail rigging that some Hobie enthusiasts are creating on their own.
It's a true boom type sail, and comes with mounting rig that would allow you to put the sail in the FRONT of your kayak.
Here's a link to his video showing the sail in action. http://www.kayaksailor.com/gallery_video_alone.htmlInteresting. and damn it looks cold in the NW!