Young pilot once took off with both aileron and elevator locks in place (no flags, rusty locks, in a hurry etc) and barely survived. The BN2 pitched up vertical and stalled, he had trimmed forward so it recovered just above the runway, real drama. He flew it back onto the runway using rudder and asy power, very skillful I thought. On the runway he shut down the left engine, jumped out and removed the locks, started up and took off again. He had 9 passengers. None got out when they had the chance. Must have thought it was normal.
The airplane is tough.