Frisbee Pickup: Right Side Up or Upside Down?

[CrazyRussian96]

I was wondering whether most frisbees landing on the field as a result of missed shots will land upside down or right side up. During a kickoff event with MARs (2614), we discussed this issue, and decided that most frisbees will hit something, become destabilized, and fall to the ground upside down. Though this seems logical, I am skeptical about this hypothesis and would like some other opinions. This is critical because it might decide if the robot needs to be designed to flip frisbees after picking them up.