Actually I use the same method as you Paulski. Only I try not to use the notebook at all. For example, I use the 3:15 rule to get a target's speed:
you mark the position of your target on the navmap, immediately start the chronometer, and after 3 minutes and 15 seconds mark the position again. The distance the target covered in meters (divided by 100 I believe) in that time, is the speed in knots.
AoB and distance I get the same way as you do.
And I like to manually put it all in the TDC. Don't know why, I just like actually turning all those pretty dials and buttons
