Shawn says:
It's also important to tell you what the angle of sideslip is - minimizing drag in the cruise can save fuel, and you have no way of knowing sideslip (unless you fly Airbus helicopters, of course).
I dunno Shawn, after many years of teaching, my back has developed into a very sensitive indication of sideslip angle... which students seem to be able to keep pegged for the entire flight!