Sometimes in life you learn something by accident.
Back around the mid 1990s I had arrowed a deer and while blood trailing it, going slow looking for every spot of blood, I caught some movement out of the corner of my eye and just a few feet away, there was a Fox Squirrel looking through the ground debris.
I got an arrow nocked and added to the harvest that day.
Well fast forward, I went out Squirrel hunting and thought I would try "still hunting for squirrels."
Oh wow, I actually limited out in less than an hour, and every shot was on the ground.
I'm guessing that something that is moving that slow can't be dangerous.
I have squirrel hunted that way every sense.
If you are a squirrel hunter, you should give it a try, but keep it a secret.