Over fifty years ago on the Bristol Sycamore all practise EOLs were with the engine shut down. There was a cam on the collective that would open the engine to full when you raised the lever to cushion the touchdown; to avoid this the engine had to be shut down on finals when one was sure of arriving at the right place.
The droop stops held the blades clear of the boom on shutdown so in case one of them failed after landing the engine had to be started immediately before the blades slowed down to the critical stage otherwise a blade could hit the boom.
Starting the engine was already a delicate operation to avoid slamming the freewheel unit so you were using three hands and your knees..