Last year my PHL-MUC was overbooked by 11. (I called the day before and found out they were overbooked.) Knowing this, I got to PHL early enough for the early bank of transatlantics and asked to play "Let's Make a Deal." I asked to be put on one of the earlier transatlantics either FRA or CDG. CDG was leaving in 30 minutes. Agent checked with the supervisor, processed my upgrade and gave me the check for $600! And I got to MUC earlier than originally scheduled. Now before I fly transatlantic, I always check the loads. Haven't been able to repeat, but I'm always looking.