Not saying, like i would know anything about flying this game... but this is how i see it when i try it (not to get shot)
I tend to use the defensive spiral quite a lot, but usually the guy behind me is too good to be fooled with it.
For me, it's something to use when all else doesn't seem to be option.
CO-E con behind, lets say a spit16 or N1K, they can maneuver that gun platform too well for me to expose too much wings for them, so thats when i usually try to evade by going nose low and then spiral.
If it works, i usually try to go vertical and start rolling scissors.
Anyway, if he shoots any good, i'm dead