I do. All you need to scry on someone is the knowledge that they exist. Once you have that, even 1 round is enough to give you:I'll be honest, I'm very surprised at how many "its fine" responses I'm getting. People really think 3 or 4 rounds is enough time that its worth all the cost and effort?
Appearance
Condition
Local location(in a forest, in a cave, in a building)
Current activity(running, fighting, sleeping)
Number and type of nearby characters/monsters
That's a minimum. That's enough to tell you what would be good questions for a divination ritual, or to give you nearby objects to target for the cheaper View Object ritual if you absolutely need to scry some more("the largest stalagmite that's been seen through my scrying mirror today" is nice and unambiguous).
It's not good for long-term surveillance. It is good for generating leads from the barest scraps of information. To go from "a town has been destroyed" to "a town has been destroyed by a red dragon with a broken left claw who is currently laired in the ruins of an ancient palace" is pretty valuable.