I have been told a "superglue sandwich" works well - tried it yesterday and it seemed good.
It is basically the 2 part epoxy with superglue (cyanoacrylate or loctite) on each side -
Make a plug of expoxy - take the coral and hold it upside down in the water with the base sticking out - dry the base with a towel - push the epoxy plug into the base to shape it - take it out and put a good covering of superglue on the area - the press it back into the coral base and hold it in place for a minute or so.
Then press the plug into the new "home" to shape it - again bring the coral base upside down out of the water - dry it - superglue again - and press it into its new home.
Helps to wear disposable gloves, and have 3 arms. Or a friend. Or a container to put the coral upside down in. Seems to work well - I used too much epoxy, but it will get covered with algae in time.
HTH
John
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