I have noticed a 3 small holes on the edge of my bodhran skin on a fault or flaw line of the original goatskin. They are each a bit bigger than the size of a pin head but so close together they could become one bigger hole quite easily. It was a mid range bodhran from hob goblin quite a few years ago. I dubin the outside about one a year. Can I do anything - I thought maybe pva glue, as it is flexible, to block and seal the holes - but ovisouly do not wish to put something on that will further damage the goatskin. I am not in the position to spend a lot of money on anything.
I was just told at a festival that the best way to play a bodhran is with a knife so no more anti bodhran jokes please:-)

Helen