From: Grapevine, TX
You can also build a SAM trap using AAW patrols, relatively small prosecution areas, and the right mix of EMCON settings. On the computer at the house I've got a test scenario I built, but the same mechanics are in Op Balpara (http://www.matrixgames.com/forums/tm.asp?m=3772100).
Look at the two HQ-16 units on the Militia side. They get outside target cueing from the Indonesians, and once someone is inside the designated engagement area, they launch.
I didn't invent this, I know credit goes to someone else, I just don't remember right now who it was. But I thought I'd share, because I think it does most of what you're after.