The kites we've been messing with were invented in Australia to be used on the beach and by surf and lake anglers. Gary Anderson has played with them for a few years now, and has caught mackerel, kingfish, shark, and small tarpon on them. He's a died-in-the-wool DYI person, and gets great joy in making rigs from clothespins and duct-tape (or something like that; a popping bug, I think, required the tape).
He is talking about using kites to surf fish at the Extravaganza. There will also be people there with more traditional boat-based kiting, so you will have the chance to learn a lot about using them.
Maybe we'll talk about putting a few out during our month-long tarpon training class.