Turnaround plays are risky options, although they do possess a lot of potential upside if they go well. When Amazon's deal to acquire iRobot (IRBT 3.12%) fell through earlier this year, it was as if the air was let out of the robot vacuum maker's stock. Almost in an instant, shares went over a cliff. The company has been struggling to gain traction ever since. Its sales have been declining, the business is struggling to stay out of the red, and cash burn is also a concern. After all of this, iRobot's stock ...