Now I may be wrong, but it would seem to me that these guys should be searching for all the water that covered the Earth instead of a needle in a haystack. This means that the water was almost 30,000 ft. deep. Now a Boeing 747 flying at that altitude would be barely visible to the naked eye. As children in school, we are taught at a very early age all about the rain cycle, except for kids in Kansas and a few other places that teach superstition.
Extraordinary claims require extraordinary evidence.
This is not science. We are left with relying on the testimony of people who appear to have an agenda. The big problem is in Israel. That nation cannot justify its existence unless the Genesis and Exodus tales are true. This is the same thing the Noah's Ark people are doing.