Useful to trick enemies into thinking you're weak and relaxing their attack. Minimum works best the majority of time. What you're looking at. These boil down to personal preference. Try them both out.
Overload raises shield strength and power.
Lock on your tractor beam to a target when you're not under a tractor field OR activate a repulsor beam to break out of an enemy's tractor lock. Experiment with both and pick which one suits you more. Gunnery Chair puts you in full control of your ship's weapons but doesn't leave you flying. Use it in conjunction with your ship's helm and Bore-Sight. I personally use Tactical HUD with Auto Firing.