I rarely get involved in a furball, and when I do, it is usually with 190A5, P51B or La5 on purpose (with decent results), and some other rides when an attack mission ends accidentally in a furball, but almost never with Dora.
Most of the times my victims (in Dora) are well aware of my presence (even totally target fixated on me) and no, it is never a hit a run tactic (that would lead to land too few kills or no kills at all), and mostly 1 vs many situations.
I'm not against furballing, nor against furballs, neither against furballers. I'm against those that think nothing but furball are worth to be considered "fighting", and they, at the same time, consider themselves "heros" and "aces". IMO, furballing may be fun for a game like this, but has little or nothing in common with aerial combat, and does not represent anything related to WW2 aerial fights.
If you like to recreate WW2 combat situation, you will try to survive while effectively killing enemies (not just to only keep alive). Then, what would be an acceptable K/D? 5? 6? 10? 20? In that situation (playing like this), a single death (I mean pilot death) is not acceptable, and I'm personally well below that mark.