Eyesout: Flaring would conserve the rate of decay of Nr it might even increase the Nr if you're fast enough.
I
never let go of the cyclic, mainly because my FLM tells me that if I have a SAS runaway and the cyclic is 'unattended' I could lose 400'+ within a couple of seconds!
I
rarely let go of the collective - possibly because of my background as a mil instructor and protecting myself from a clumsy student pilot. Mainly though - there is a big fat steel rod attaching the Nr gauge/rotors and collective. Ask the engineers to point it out. You really should be ultra close to that collective most of the time.
What response time do they give R22 drivers for rotor recovery: 1.3 seconds, is it?