My mind says you must be perfectly correct, we are just coordinating rudder with aileron. And yes, it is an instructional technique to overcome driving with the yoke. But in practice with Dutch Rolls or with steep turns, not leading rudder delays progress unsafely. This is especially true with getting the down wing up from significant bank. This is especially true in spin prevention after stall and in the falling leaf. No aileron is used, no coordination, just rudder is used to bring the wing back level. From an instructor point of view, there is much more slipping around turns with insufficient rudder than skidding turns.
Wolfgang Langwiesche also emphasised paying attention to what the airplane wants to do. It doesn't want to make level turns, either slipping or skidding level turns. It doesn't want to stall making spin possible. In fact dynamic neutral stability, which lowers the nose after disturbed air pitches it up and after any banking, prevents stall. It takes a pilot pulling back on the stick to cause stall and spin. It is the pilot pulling back on the stick and not his pushing on the rudder that causes the stall. Without the stall there can be spiral but no spin.
Zero timers are much easier to teach crop dusting than those who arrive at Ag school with a Commercial, for the most part, because turning with insufficient rudder to make the nose move appropriate to the angle of bank is muscle memory with high time pilots who have not had to turn steeply very much. Slipping turns, not skidding turns are much more common. Yes poor wind management that causes pilots to make downwind base to final flat turns cause spins too often. When practicable, no traffic around for instance, an upwind base at slower ground speed and tighter diameter of turn is much safer than a downwind base and base to final turn. And any turn is safer if we let the nose go down as designed. Even the climbing tun. Are we in such a hurry to get up that we can't release back pressure in the climbing turn and then pull again when wings are level after the turn? Are we in that much of a hurry to climb so steep and slow that we stall in the pattern where we don't have room for recovery? Anyway, what we have to yell more than anything else in Ag school is, "push that nose around." The energy management (Wolfgang's law of the roller coaster) turn or crop duster turn is not a level turn. We don't have any need to be up there anyway. We have to descend to spray. We have to descend to land. The airplane is fine with descending. It doesn't really like climbing so well. Especially at less than enough airspeed to safely maneuver.
Again, outside of actually flying the airplane, what you say is perfectly logical and correct. Yes, level skidding turns are dangerous. Any level turn is dangerous. As some angle of bank, we are going down by pitching down or falling anyway. Limiting bank is not a solution. It is an excuse for not learning to fly the airplane safely. Yes, Stick and Rudder has a lot to do with flying the airplane safely.
