[As mentioned before in this thread, I had the same problem as the last two posters when I tried to use a plastic toothpick. I found the best method and probably the least strenous on the coral was to just wedge between two rocks. I put the base of the coral on one rock with a crater in it. I then put another rock next to it to supply enough force so that it wouldn't move. The colt attached in a little over a week. It's doing great now and has increased in size by about 50%.
HTH,
-soji]