Here's how my PowerWinch manual says to anchor:
...drop anchor by pressing the winch switch in the down position for approximately 5 seconds. After the anchor has begun to free-fall it is safe to release the switch.
CAUTION NEVER REVERSE THE WINCH WHILE THE UNIT IS IN FREE-FALL MODE.
3. After the desired amount of rope has been release, retrieve 3'-5' of line by pressing the switch in the up position.
I'm using all-chain rode. Once it starts to free-fall, it just continues to accelerate. If I never reversed the winch while it was in free-fall, I'd empty the rode locker, and there would be a pile of chain on the bottom.
That's not how I learned to anchor.