I've had the same thought. Studs that come out of the rail mounting holes and the cotter pins to fix the seat?I need some quick disconnects to remove the seats. I really dread taking them out.
Sounds like you chose safety over convenience.I did modify them a little. I drilled holes through the floors. I have bolts on the seat that pass through the holes and nuts under the car. I have a 1/4" aluminum plate under the car. All I do is remove the nuts and pull up on the seats. I have the aluminum plate for all my 6 point harness bolts.