When cruising engineless, I hove two a couple times to anchor, not intending to stay that way, and did not like the contradictory force at all Simply hanging on anchor was much more comfortable If I don't want to be point to the waves/wind I use a line several feet behind the bow out to the anchor chain to set my boat off the waves/wind a bit.
Yes, a riding sail is fixed usually to the back stay not the mizzen, but design may allow one to be attached to the mizzen mast track, one line is then attached to a point that allows the riding sail to push the boats stern to one side or the other to act against the set of the anchor.
Thus hold the boat more steady.this helps a lot with movement typical with anchoring in higher winds.
I have never held of being hove to while at anchor.
I'm sure that's not correct.
You can do this in an area where you'll not be pushed ashore or into another boat.
This technique is for area that are traffic free. As your drifting sideways.