Cool, you have many techniques to paralyze an opponent.. I see you already figured that out..
But, what if someone else, an opponent, makes the water go away, with a fire technique?
And what if you keeps you at a distance.
Then theres not much to get him trapped, exept earth.
But thats for later..
Now we focus on water.
You have enough food for strategies on trapping your opponent with water now i believe

...
Now for some defensive water moves.
Heres a good one when someone throws Kunai, or shuriken..
Suiton Okashi Mizu Yoroi(Candy water armor)
It protects your body from harm, and a nice bonus, any object the opponent throws will stick to you, so you just have to throw them back and dont waste any of your own ..