Sweet in-flight pics, eugi!
To add a bit more on how I approach "working" with the flexi's: I usually start by imagining how I'm gonna set up a pose. Then I adjust the rods to a position where I can get the stand to hold the correct pose and angle. In other words, I try to make the pose dictate how the flexi should be positioned; not allow the flexi to dictate how the pose should be.
Of course, there's a lot of futzing, repositioning, and using different parts of the plane to hold a particular pose or tweak an angle ever so slightly. I've found the ventral fins and the leg FP nozzles on a lot of the birds to be quite useful as a rod placement point. The flat underbelly of the FP'ed YF-21 with all its little nooks and crannies is also pretty flexi-friendly.
Additionally, using different lengths for each rod usually helps a bit when coming up with more dynamic poses. And different lengths are absolutely essential if you're gonna attempt any battroid poses.
In any case, less words, more pictures:
Well, well. Look what decided to pop up out of its foxhole. . .must suck to be you.
Blackjack: Alright, Old Man. The -19's MINE. . . "superior plane" my ass.
Stealth: Fine, I'll take out the -11. . . bringing a bloody bayonet to an Itano circus.