If you can get to the underside of it (if you can't you may as well scrap it as you can't make a nice repair from the top)clean the area with some sand paper wipe off the dust and stick a patch of Duck tape/gaffer tape over it, there is no pressure there and the tape is waterproof, I've fixed holes in the bottom of watering cans with it no probs.Don't complicate the job just slap some tape on.Enjoy.
Rich t, February 2014
