Related Clues:

• Goes off on a tangent
• Moves sharply one way
• Sudden sharp turns
• Moves unpredictably
• Alternate courses
• Navigates a switchback, in part
• A great many
• Sharp changes of direction
• A lot of lots?
• Turns on a pivot
• Quickly changes direction, perhaps with a serve
• Just before start of storm raft lurches violently
• Zigs' mate
• Swings around (var.)
• Swings on a pivot