Ok, my turn.
I would use this jutsu to exploit any large water sources the opponent makes, while giving myself an offense and defense at the same time, as well as depleting the opponents water source.
I perform the necessary hand seals and using the water source that my clone created, I spew a large blob or mud into the water. It begins to absorb the water around it and it releases dozens of tentacles in every direction, some around me as a makeshift shield, and some in your direction trying to impale you.
Guess we're done. Also post in our nin training. >_>