Geez….you guys are making rocket science out of everything, aren´t you?
Hover the helicopter, pick your reference-and hold your spot.
As easy as this.
Thousands of pilots are doing this every day-in EMS, in SAR, in long line operations, in utility and construction work….its easy.
All it takes is a good instructor-and practice, practice, practice…
Start looking cross-side (e.g. when i instruct, i fly left seat and pick my reference on the right side-this way i can cross-reference the instrument panel AND keep my reference).
Triangulate if possible-if you only have one reference point, then use that.