The most popular post on this blog bar none is Making a Maze from Caution Tape: Guest Post by Dan (DH)
written by my husband. (She wrote bitterly)
He goes into more detail and answers some questions in DH Guest Post: Caution Tape Maze Revisited, Part I
And he has added a second update explaining exactly how the teams of teens lays out the maze.
Ben suggested a maze that would change configuration mid way through the fair so the trampled grass would not give away the path in 2015.