TC - do you not remember the extended range auto demo on the Gazelle?
Enter auto at 95 kts and 380 Nr - when you were sure of making the landing area, chop the throttle and droop the Nr to not below 330Nr.
Once you had shown the LP moving down the screen and that you were clearly going further, recover the Nr to 380 in the flare back to 60 kts for the EOL.
it very much depends on the shape of your blades as modern assymmetric profile blades might not perform as well with the change in relative airflow as the symmetrical Gazelle ones did.
The Squirrel has the same capability I am reliably informed.
I suspect he was reluctant to lower the lever enough in the flare to fully recover the Nr for the EOL. Not surprising when you are going down quickly towards a dark river for real!