I've fragged mine a few times, all you need is a very clean sterile razor blade, you simply cut around the outer rim so you'll get a long "ribbon" if that makes sense, super glue typically doesn't work because this coral will release a lot of slime which is a healing defense mechanism, so what I've done is take 2 rubber bands and create a X over the chunks on top of the frag plugs and the leather will actually grow its own stalk again in a few weeks. Some people have taken a plastic toothpick and speared the leather to get it to stay on the frag until it grows but I prefer the rubber band method.