You can do it with the TMA tool in MoBo... at least you can ditch the pencil & paper. I didn't read all of your post in detail; sounds like you're talking about the stuff I mention in the MoBo manual under TMA and Advanced TMA (the Adv TMA section relates to plotting future expected bearings to triangulate on target position). You should probably search on "TMA" or Target Motion Analysis, to find hits on this forum.
You can pull game screens in to draw on too...
