There were actually successful attacks with water-skipping bombs. In some cases it was the only way to get the bombs to the target due to the low angle needed.
The technology was innovative, but the results were mixed. Almost half the aircrews died, and the main casualties of the resulting floods were forced laborers and POWs.
Wow, never heard about that one. Did they never duct-tape bottle rockets together as kids? Might have taught them a little humility and saved some time.
http://en.wikipedia.org/wiki/Panjandrum