A satelite, ready to lay down the law on anything that might be below it when it fires. Throttle + VTOL up for hovering mode, add landing gear to gain height, Pitch/Roll for SAS thrusters (it is easiest to steer after instruments) AG1 + Guns for primary fire, AG2 for secondary fire (DO NOT USE THEM AT THE SAME TIME), Trim to turn the solar panels. I suggest to spawn this on flat ground. Fly in orbit view. WARNING: Keeping this still is like balancing a ball on top of another ball, so do not wait too long or you'll loose control!

Scince it appears to be harder to understand, than I thought, here is a very easy and compact instructions manual:
1. start on an airfield or similar flat ground with a clear sky
2. throttle up, press G and put VTOL up
3. keep it straight up, use the instruments to do so, don't wait long though
4. press G again to go into hovering mode (you'll only loose upwarts momentum slowly, keep that in mind)
5. use AG1 + guns or just AG2 to fire the weapons, not both at once though