Gain potential with pumping after 1 inch gain with manual exercise's?

OK, Here is the solution:

The farmer must first take the goat across the river. He then returns and picks up the wolf. He leaves the wolf off and takes the goat back across the river with him. Then he leaves the goat at the starting poing and takes the cabbage over to where the wolf is. He returns and picks up the goat, and then lands where the wolf and the cabbage are!