Two guys had the same issue with a Fanatic Air on the Gong forum ("bonson" and "JC25"), you can read - and Google Translate - their experiments at:
www.gong-galaxy.com/forum/viewtopic.php?f=32&t=14992In a nutshell: it didn't work, the re-glueing did not last. The problem is that the mast insert goes inside a hole in the board, making clamping the parts together for re-glueing quite tricky.
The solutions seem to either buy a new board (what the guys did), or (untested, but suggested by "Fred" of the Gong staff, as it is the system used on Gong boards so that the skin is not pierced) to glue a patch to close the hole and then glue a mast insert that stays above the board skin, without the need to have a hole in it.