I love Dexter. Or rather, I love Debra but that’s besides the point.
The people in this show have to be as stupid as the day is long not to notice the obvious tailing and tracking that goes on. This is especially prevalent in Season 2 with the introduction of Lundy and the FBI. How Dexter is able to tail FBI without raising any suspicions is beyond me, do they not check their mirrors or have any situational awareness? The show is pretty fast & loose with facts occasionally, the creators of Dexter have correctly put character in front of virtually everything else and it’s such a strong series as a result.
Anyway… I have it on good authority that when the FBI wants to tail you, they will and you will not spot it.