Evening. On our last trip we dropped something heavy into the bathroom sink and it made a small hole in the white plastic which is brittle. We have a Westfalia James Cook. The hole is about the size of a large screw head and I would be grateful for suggestions about what product to use to discretely fill the hole. Sikaflex would work but would not give the shiny finish of the rest of the sink. I wondered if there was anything from the marine world. So any suggestions? Thank you. Adrian.