I recently got several large panels of salvaged gym floor with the intent to use them as a snap-together dance floor, installed over carpet. The padding under the carpet is very minimal, so I don't expect to need a subfloor. The flooring is maple tongue-and-groove with 2x3 backing every foot & minimal to no warping. The floor will be approximately 18' by 22' and contain at least 10 seams which do not necessarily all align, as they would in commercial click-together temp floor products.
The problem I'm having is coming up with a connection system that is both secure and can be released without direct access to the underside of the full length of the seam. I'm hoping to do this for around $100 or less. I am open to any and all ideas and have access to a wide variety of tools. Dance floors are subjected to repeated force that tries to walk the panels apart, so I was thinking about a system that passively wants to slide together (some sort of miter cut system and gravity?), can be retightened relatively easily, or has an active hold (I was looking at embedded electromagnets but having trouble finding a system that would come in on budget). Toggle clamps or latches might work but would be hard to reach along the longer seams.
I really want to avoid fasteners through the top surface if at all possible. I can escalate there but if it's achieveable to do this without compromising the dance surface that would be preferable for a first pass at the problem.
Thanks for your help!