1-in-1
The Hunter 1:1 was a reasonably straightforward technique. Having settled into the glide clean, you waited until height from touchdown was numerically the same as distance, then on the ATC call "Undercarriage, undercarriage...GO - Acknowledge" you dropped the gear (for real you would use the blow down plug) and matched height for range until the aerodrome was in sight.
If the engine was windmilling and you still had hydraulic power, things were reasonably relaxed. But a manual 1-in-1 was physically demanding, as was the subsequent flare. We practised manual 1-in-1s on occasion, by turning off the aileron and elevator hydroboosters - but used the normal landing gear system.
I can't remember whether we planned a flapless landing, or would use the flap blow down plug on final?
The trouble with the Gnat was that the emergency undercarriage lowering system could take up to 30 sec to lower the gear, making assessment of when to do so very difficult - so we didn't use that technique at Valley.
Of course when the Hawk with its RAT came along, the radar PFL was a much easier profile to fly.
And now, back to our regular programme.....