Gertrude the W
Exactly the point you have to fly as if all your flashing Gizmos have failed and you are left with basic navigational equipment! Yes too many pilots rely on the gizmos. Anyone who can accurately fly an NDB hold offsetting for wind and then leave that hold outbound on an NDB approach again offsetting and having a good mental picture of the winds and approach and then complete an NDB approach hitting the right descent points at the right time to minima can fly anything.
i would add doing all that in IMC and turbulence! its the best training exercise you can do.
Pace