On many zoantids and palythoa, you can grab them at the base of the stock with tweezers or hemostats an "roll" them off. I like to get at least 2, pinch them then roll the tool and they kind of peel off. Some like to stick with super glue and others don't.
I am a fan of bridal netting for holding them (and other soft corals) in place. put a drop or two of CA glue on each side the zoos. Then take a small strip of the netting, put one twist in it then place the thin part over the zoos an ensure the netting goes into the glue.
We are having a fragging class at the next IMAS meeting and I need to get some more netting. I will try to remember to take pictures of what I am talking about and post it...
Thanks,
Scott