What I found very good with AP channels on is that in combat you can consecrate in other things, blowing you enemy instead of worrying to fly the BS. I get overload with the things I need to do when in combat.
I can only fly 2 missions every time maximum. The thinks you have to to incockpit and how realistic the sim is is unbelievable. If I fly more I get so tired that I switch my PC off. I wonder what training the pilots are going through to make it possible to fly BS and how many mission they can fly a day???