This is a great discussion. I need to nail down my darn terminology, but meanwhile lots to consider.
I really can't argue one way or the other, but I do know from experience that coyotes often travel alone. They're not always operating from within a pack. In fact, I've only ever seen a non-solitary coyote once.
Coyote are larger than raccoons, but that doesn't mean they're more likely to leave tracks. On dry ground you may not see anything, and with lots of rain muddy tracks may infill and smooth out. We have lots of mulch and decomposed granite and gravel on our property, and wild grass, so it's not so easy seeing tracks.
Although a tracker would probably see tons more than I do with my Scooby Doo knowledge of animal tracking.
It's also been my experience that coyotes grab and go, deposit their catch, and then come back for more. Maybe not in the deep wilds, but where human developments are concerned and food sources that aren't native to their local diets, this does seem to be a common method. Neighbors have told me that with a coyote, often the only evidence you'll see is a small pile of feathers in the coop, if that. No on-site killing.
Night vision cameras attest to this.
Raccoons, I'm not sure, but from what I've read they seem to be more vicious and not so much of the grab and go variety. They seem more prone to killing on site, with blood as an indicator of this, and then maybe they carry off their dinner to be consumed at the Coon Cafe in the woods.
Bobcats, wow. Did any of you see the long video someone posted of a bobcat attack inside their coop at night. This was in the last few weeks. You probably already know this, but it was new to me. Bobcats tend to kill and eat on site and leave piles of carcasses right there. Do you agree with this? Do cougars do something similar since they're kitties, too?
Weasels, I'm just learning about those things. Teeny and cute, but crazy vicious. Not capable, I don't think, of carrying off anything larger than maybe another weasel?
ETA: I think coyotes probably do "operate" from within a pack. I hear them howling for each other all the time, and I especially love hearing coyote packs with howling puppies. But since I only ever see them along, except for once, it's my guess that they travel throughout the day, on their own in search of food, and then maybe they have a coyote meet up at the town hall?