Auto's in a jetranger
Personal opinion, but I'd say don't do it in your own machine. Its your premiums that will be pushed up if you have a mishap, and its not all that hard for that to happen.
Robinson brought out a supplement that stated that more accidents happen because of practise auto's, than of real engine failures. That statement is a favourite with insurance companies, and they like bringing the supplent into accident investigations.
Opening the power on a jetranger for a recovery is tricky in some jetti's, and I've heard of cases of the engine taking up to 8 seconds to spool up.
If you dont want to touch down, then you might as well leave the throttle open, and dump the collective. Keep the rotor RPM high in the green, and you've got a relatively safe auto, with power available on demand.
Beware of compressor stalls though. If it barks close to the ground, you might get a bit of a surprise.