I only fly model Helis so risk the wrath of proper pilots by posting here so apologies in advance .
I am talking about decent sized IC engined models with a full set of controls inc a govenor to keep constant head speed .
I often do walking speed manouvers out of ground effect but low enough to have the ground as a reference . In a flat calm pitch change is only really needed to maintain constant height if airspeed changes (no wind so airspeed =ground speed )
A breeze particularly if gusty needs contant and quick attention to pitch to maintain height and groundspeed particularly with slow turns .