WonderMonkey: "Swift has a detachable seat that uses magnets to keep in place, and I think could pop out quickly. Ignore the carbon fiber and see if this gives you any ideas.
https://youtu.be/ZKyGfut7qoo?t=145 "
Can you imagine the amount of Black sand the magnets will collect?
I made a saddle of mini-cell for mine that is not glued in , what I have not done,yet, is to attach a lanyard to it and the boat so I don't lose it.