Silent running has been working well for me. The only thing is that if you are in line of sight, authority can complete scan.
Here was my experience. I just got an Asp and started doing a 76 system rare trade route. I want' choosy...narcotic, tobacco and liqour, I'll move it all. Using silent running, I completed about 30 or so docks without a single scan. Then I come to one federation station, and I'm full of onionhead and various illegal drugs. I do the usual, boost around till im facing the letter box, engage silent running and fly on in. This time, however, I didn't pay attention to the authorites...they were sitting right there staring at the letterbox. I saw them at the last minute, started to panic and began to drift to the side, risking a crash. SCAN DETECTED....Oh crap. I thought for sure I was going to get fined. Usually when I just miss the box, I just full stop and thrust around like a bumbling idiot until I can get in. I couldn't do that this time, I was being scanned. So, I pitched up and boosted, damn the hull damage. Somehow, I must have gotten out of the view of whomever was scanning me. After I got some distance, cooled things down, I tried again...this time with success.
So, yes, I think Silent Running is working it just isn't the invisibility cloak it was back in early beta.
I also launch Chaff on the way in now too. Not sure if it has any real effect but it sure makes me look special when I enter the station
