It's kind of crazy in the beginning fragging soft coral but as long as water quality is good you could pretty much run through a blender and just get multiple frags. The hardest thing about soft corals are that you cannot effectively glue them down to plugs or ? and need to let them attach on there own. Mostly people cover with netting or keep in a tub/container of rubble for this purpose. IME have easiest way mentioned above, once attached to other substrate just take a razor blade and cut it off near base. Whatever remains will most likely grow into new coral. Toadstool/Sarcophyton Corals you actually cut off just the cap and place it on LR/? to attach and you will end up with two corals as the remaining base will grow another cap. I've taken large Toadstool and cut off the outer cap like like a big doughnut then cut this into several squares, within just a few weeks the mother will have completely healed and all the squares are nearly discs and on their way to growing stalks of their own. Kind of FREAKY but you will get used to it and have fun in the process.
Cheers, Todd