Bit about sneaking around.
Your thermal signature scales with your speed. Setting to 0 gets no thermal sig, setting to full speed is full thermal sig.
When avoiding ships, theres nothing to stop you from moving at 1/4th speed and only letting out 1/4th the signature. This is useful especially if you know how good the enemy's passives are as I've had situations before like this.
GEV out putting about, suddenly its thermals pick up some signatures coming my way probably NPR warships.
Setting throttle to 0 I saw that they were still approaching, and had turned their actives on (actually another ship picked this up, but I still saw).
So I set speed to 1/4th and started heading perpendicular to the direction they were moving. They kept right on course, and I was able to shift out of the way before they came close enough to spot me. Then they just sat there with their actives on and derped around for a little bit, but I was already quite far gone, arcing around to the jump point to retreat.
Also each level of DSTS gives them ridiculous passive sensing ability. Never seen much more than 10 of them on a planet, but you might not know what planet they're on (EM sensors help with this as they can sport the DSTS colony from a good distance away). This with some math can let you evade detection by those, as those are usually the first thing that spots you when running around at full throttle in a system.