Mmm, interesting. I find my experiences don't really align with Codgers. I've always been able to prevent a successful scan by launching a heat sink as soon I see SHIP SCAN DETECTED pop up. I don't use silent running entering stations and I think it results in the station not being able to identify you and restricting access to services so you can only access Black Market or Interstellar Factors for paying off your own bounty.
I really don't have much hassle with passenger missions, although every activity in the game does requiring learning a technique that works for you.
The real solution to being scanned on entry to stations is being allied with the controlling faction. I've never knowingly been scanned entering a station where I am allied with the controlling faction, and interdiction attempts in mission die off as I get allied with the other factions in the area.
I've spent so much time in the Robigo, Sothis, Ceos systems I'm allied with most factions, never get scanned and never get interdicted on passenger missions now. So there is no challenge to passenger missions for me in that area.
I'm looking forward to returning to the California nebula with my Anaconda loaded with passenger cabins, shields and guns. It's hilarious, everyone is after you and you'll probably have a rich fool demanding two units of fish to make his trip more comfortable