Ms. Frizzle takes the front end, keeping an eye at the delicate mechanism which controls the front wheel. Cueball is at the balance point close to the supporting wheel, carrying the largest part of the weight. Megan at the aft end takes care of the ropes. Ms. Frizzle is impressed how well Cuegan are assisting her.
… the molpy?
Spoiler:
While Cueganzzle were at the tower, it moved from the left bush to the right one, where it's hiding now.