A buddy ended up with a 17 hour day trip (res GS) where he deadheaded out and back because they doubled crewed the return leg. Actually it had 3 Captains and no FO until the rerouted an FO at the outstation. It actually showed an FO for hours but that FO was showing assigned to two different rotations at the same time.

On the plus side, the PB days made him available for the GS he's on today. Sounds like we'll see more of this in the near future.