If you are targeting a convoy where all ships are on the same course and have input that data, the usefulness of the easy AoB is minimized. However, the easy AoB makes it easier/faster to input the course information, including subsequent course changes, and verify that it is recorded correctly (by looking at the TGT dial, and by verifying the firing solution on the Attack Map).
Also, if target ships are on different courses, it is faster to set up for the different targets using the easy AoB to track their courses.
The AoB is effective at long range if you can get a good lock on the aspect ratio.
My watch is over and I have been relieved.
