How do you kill Ganondorfs Puppet in wind waker?

Hit each of his strings 3 times and shoot his blue ball 3 times and he will turn into a spider. Look into the water , and when the spider drops go into the section where the blue ball is and shoot it it with a light arrow 3 times. Puppet Gannon will turn into a snake. He is really quick so you must have good aim to shoot the ball. He will FINALLY have been defeated.