Return to the ship

Zuko's concern should be on the Avatar, not peasonts in a village island. He orders his men to return to the ship, leaving the island to recover from it's damage in the hattle. They may be a threat to him in the future, but it should not matter to him.

Once leaving the island, Zuko goes over the map to see where the Avatar could next head to. The Avatar won't stay in one location for too long anymore, so they will need to plan ahead to cross paths. Zuko just needs to think where the Avatar will be, and that was when he spots a prison in the middle of the ocean. The ship needed to get fuel in order to keep traveling by sea.

If he is lucky, he might come across the Avatar, or get some clues to his next location. For now, he needed to train, keep the ship running and avoid Commander Zhao as much as possible. Zhao may try to hinder Zuko's attempts in capturing the Avatar.