The side slip is our friend in a crosswind and the forward slip is our friend to help us lose altitude quickly in an airplane with no or poor flaps.
The skid, however, is considered taboo. This is unfortunate for the most sensitive and effective longitudinal alignment trim devise: the rudder or anti-torque pedals.
We have two options when making fine adjustments to put the nose, Norton bomb site, site reticle on airplane or helicopter gunship, localizer, DG, RMI, compass or turn and bank or turn coordinator on target or align the light bar or CDI or hash mark on DG, RMI, or compass. Those two options are coordinated aileron and rudder or just rudder or anti-torque pedal alone, the skid.
Aileron and rudder coordinated turns, best tuned with Dutch rolls, are for gross longitudinal alignment adjustments. Together, coordinated, they are not the best tools for fine tuning longitudinal alignment on final when the numbers are the target or the finishing touch to any EM turns to any target. If the first pair of rockets go a little right, push left rudder or anti-torque pedal a bit and release to allow the tail to streamline. Now fire the second pair. Or just wiggle the rudders or anti-torque pedals to make the pipper bracket the target a bit. Charlie can hit you just as well in small coordinated turns but you certainly will not hit him. Same with putting the nose wheel on the center line.
CFOT asked about skids in the direction of the bank in the nose down portion of the energy management turn. This is to get the nose on target more quickly, if necessary, and is certainly preferable to flying into the slope of the opposite ridge in a canyon or ridge valley system turn back down drainage.
Finally wings level rudder turns in low ground effect prevent putting a down wing into something.
