Once you add the manure to the hovercraft, it automatically goes to the point where it is used : in the mud swamp to the right of the mill.
At Mordred's secret lab, when the owl flies out, you feed the mouse to the mechanical owl. The owl becomes your friend and follows you.
When you awaken the robot owl Merlin, he flies out of Mordred's lab. In order to get him back, you have to feed him the robot mouse. (chomp)
The hovercraft (hover board) will take you out into the mud swamp, where the saucer Excalibur has crashed. (see related question)
When you enter the underground lab, he flies out. Follow him and set down the mechanical mouse. He will eat it (chomp) and then follow you. You can use the owl to retrieve the fuel rod, by clicking on him and then on the rod.
The island in "Lord of the Flies" is located in the Pacific Ocean.
The island in Lord of the Flies is shaped like a boat.
An island in the Atlantic Ocean
The island in the book "Lord of the Flies" by William Golding is located in the Pacific Ocean.
The island was boat shaped
When you enter the underground lab, the robot owl flies outside. Follow him and use the mouse from your item bag. The owl will eat it (CHOMP). Go back down into the underground lab, and the owl will follow you. Push down the dirt wall and enter the tunnel. If you pulled the lever in the dungeon when you got the cheese, you can enter the back of the cell where the robot is being held. He will self-destruct. Click on the owl (Merlin), then the green rod, and he will retrieve it for you.
On the Island
A boat.