I have a Europe Dinghy with 2 holes cut at the base of the transom for bailers. There are clear plastic flaps over the holes that are supposed to flip up when the boat is on plane, allowing any water to flow out the back. There is some kind of tape that holds them closed, then releases at the right time. My tape has failed. Can any one tell me what kind of tape this might be? It was blue, but I don't think that it is the lightly sticky painter's tape. Tried that and it didn't work.