Hrm... I was watching that F6F fight, and it occured to me... There are many times when you're in a similar plane, or the same plane, in a 1v1 where you're both low and slow and neither is in position for a shot. Many times this devolves into rolling scissors and the like.
One trend I noticed: It is MORE likely to keep you out of the enemie's gunsight to KEEP going in the same direction you're going in, than it is to try and reverse directions (hoping to throw the enemy off, I guess), because that ends up giving the enemy a chance to set up that perfect kill shot.
Just thought I'd share that observation. I never really noticed it til I was watching those F6Fs over and over again.