Nice piece of work Lt. Cater, though usually if I'm visiting Hanoi I go inbetween 1,2, and 5, sort of a NE to E flightpath and then inside the area. Same with egress, seems always my favorite route, and usually if you go nape of the earth you can avoid the SAMs, but may get hit with AAA but if you do it right you won't get hit at all, especially fast and low. Only problem with that is getting Red Air in that pocket, and you're pretty much screwed. Tight area and defenses around you... And the NW corner of the Line of Departure, up to the forest edge (for lack of a better term) allows you to fly in and either take a Bullpup or Maverick shot and allows you to quickly turn around and dive back, allowing the mountain to shield you from any SAM or triple-a, provided of course your target is in range. Plus it's a great egress in itself, head west and head for the mountains if you hit your target. Sure you got the airfield at your South, but overall... it's a great route for infiltration. I admit most of my tactics are more modern focused, and therefore my weaponry tactics vary, but with eburger68 redoing the Bullpups, may be worth a way to get in.
Regardless though, excellent post!
9. The Finger (as per image below). Simple Eest to West depression just West of The Garden, if you need to skulk in and get a good shot in, say at the PT Dock area, the airbase just North of it, and it's a good radar blind spot from everything North and South of that position. Egressing West allows you to hit the mountains and try to dodge Red Air if you need to, without sticking your nose out in the water. After that you can go to Ubon, and a few others just SW-W of that entrance. Note it's a good solo tactic.