Further more its not like the solutions that they have tried so far have been particularly high tech (put a cap on it and hope the water pressure with seal it, stuff the hole with crap and hope the water pressure will seal it, put fluid in the hole and hope the water pressure will seal it).
There are a lot of smart people on HN, so if nothing else it is good mental masturbation to make suggestions and then explain why those suggestions are or are not feasible.