I'll make it 3 people. I used aquaseal on a drysuit repair which is still holding up after about 5 years. I've also heard good things about the Windshear product though I've never tryed it. Honestly a pvc glue and some air tight fabric should work fine. I would coat an area, lay up the fabric, cover both sides with saran wrap, and put it between a couple of books, and sit on it.
Mike Hill
Tiger #1520