I fly mostly F4U1D, and spits can be a pain to kill if he gets me by surprise or the fight tend to last.. The F4U loses energy pretty fast, and it takes a while to get it back so I need to get good angles and make my shots as early in the fight as possible vs the spit. But very often I end up in a full flaps hard turning fight with spits, because I burned my E trying to get a shot and then missed my shot. (I am a bad shot, and not that good hogdriver neither)
Then my next option is to go for the scissors, and I try to reverse and climb ontop of the spit while I do it so he burns his E trying to make the shot at me. Then if I am lucky he will end up directly under me so I can flip my rudder and get a snapshot at him as he passes under me.
I hate when a fight ends up in those everlasting flat turns on full flaps, rattling the stallhorn and shaking the plane.. Those I will lose eventually if the spit driver knows how to keep a steady plane and don't make a mistake so he straighten out his path.. So, then I'm back to the scissors again, to try make him make a mistake that I can take the advantage out of.. But if I know the spit pilot is Spacy, then I just bail and salute after the first merge..