I think what he was saying is that you need to figure out your tendencies. I tend to shoot aft alot because I guess the AoB as being too close to 90 degrees.
One way to do it is to guess it, then do the hard math, and see how accurate your guesses were.
The basic idea is to build up instincts. You want to turn the procedures into something you don't need to think about so that when you do think you can think about the minutia of detail. Its easy to be overwhelmed at first.
I'd suggest doing the torpedo school mission on manual first to get your feet wet.
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