Maybe I'm an idiot, but just last night I discovered I could shadow a merchant all the way to the coast for a land attack mission. I found one that was headed my way, so I stayed just behind and beneath him and was never detected. I even launched my TLAMs from right behind him. Conveniently, he did a 180° and I followed him all the way back out to sea.
I'm guessing I'm super-late to the party on this one. But my specialty is navigation, not stealth.
