I came up with a concept, designed it, and had a 3d buddy bring my idea to life :)
I designed custom 2x2 tiles that can accommodate 1 or 5 frag plugs and a matching shelf that holds them.
And then you take your frag plug and put it in the tile, in this case the single hole tile. Then the tile fits in a special magnetic platform/shelf. In time the coral will naturally spread off the plug and onto the tile. And if I wanted I could remove the tile and relocate it, and then just put a new tile in and start over.
Or, it can be used as a propagation system. Use the 5 hole tile (the shelf accommodates both tiles)
Put 4 blank frag plugs in the outer corners and your zoa plug in the middle. In time the coral will naturally spread, onto the blank plugs. And then you can just remove the newly seeded plugs as needed and replace with new blank plugs.
Self fragging zoa system! And you never have to risk damaging the source coral by scraping it off the plug it started on. Works with other corals also