Trapping in deep snow is all about the trap. The Alaskan #9 works good.
The best conditions though is when you get it in layers. I would make my sets as p posts close to a tree for tying off the trap. I would put 2 traps at each set each side of a spruce twig or brush and put urine on it.
I would walk around and when done sweep the area of tracks. Snow would usually cover everything up. Wrap wax paper under trap and under and leaving the loose jaw uncovered. Wad the wax paper so it is soft and quiet.
Another set was a trail set in the middle of my trail. Cut a trench from 0 to 2 inches deep in the center about 15 feet long. Place the trap in the center of the trench flush with the 2 inches below the trail. Wax paper it and you can drive over it all winter. Wolves will walk right down the impression. At least that was my experience.

^^^^^^
Yes, but not in the areas you and I trap.

Different things work better in different places.
In my area, the canines HATE snowshoe tracks. I have seen their tracks come up to the side of the trail and then jump 8 feet away .They won't cross or use the trail. Snowmachine trail is acceptable to them.

In my area the worst thing you can do is leave tracks or any sign of disturbance at your set.

When I was trying to trap fox I would find a drift log on the river. Walk on the log out to the end. Make set there ,cover it as best you can and walk back on the log to the starting point.

The deeper the snow, the better IMO. A buried bait set in a couple feet of snow is weather proof! Dig a hole in the snow. Put bait in the bottom and cover with a couple inches of snow. Add a dash of lure and set the trap in on top of the bait. Cover with wax paper and fill the hole to the top. Smooth it off and wipe out any disturbance. Canine will come along and dig his way down right into the trap.

It works really well to make these sets during a storm

Trapping in deep snow is all about the trap. The Alaskan #9 works good.
The best conditions though is when you get it in layers. I would make my sets as p posts close to a tree for tying off the trap. I would put 2 traps at each set each side of a spruce twig or brush and put urine on it.
I would walk around and when done sweep the area of tracks. Snow would usually cover everything up. Wrap wax paper under trap and under and leaving the loose jaw uncovered. Wad the wax paper so it is soft and quiet.
Another set was a trail set in the middle of my trail. Cut a trench from 0 to 2 inches deep in the center about 15 feet long. Place the trap in the center of the trench flush with the 2 inches below the trail. Wax paper it and you can drive over it all winter. Wolves will walk right down the impression. At least that was my experience.

I like those two set ideas white17. Both will work in my area, so I will give them a try this next check.

I like the trench idea! I have set traps in my trail but never in a trench. I think I will make this set next time I go out.

It's pretty handy if you already have a trail to stop a ways back from where you want your trap. Walk forward in the trail and make your set....I even bury my drag in the trail at the same time. Walk back to the machine and drive forward wiping out your tracks and all disturbance

I will try to describe how they set foothold traps and foot snares in the snow in Sweden and Russia. I watched it done with a foot snare while in Sweden one January, and a Russian friend of mine showed me how they do it in Siberia with footholds.

I have never seen this method used or described here in North America.

Both my Russian and Swedish friend told me that when an animal such as a fox or presumably a coyote goes through the snow they will step in the same hole in the snow (track) that they stepped in the last time they came down the same trail.

The trapper selects an area along the animal's trail where he wants to set the trap. He then approaches the animal's trail from a right angle preferably from behind or alongside a tree or bush. Starting maybe 16 inches away from a particular footprint the trapper carefully scoops out a hole in the snow maybe a foot square with a wooden paddle type of tool made for the purpose; the snow is set aside for filling the hole latter.

Once the hole is dug, then the trapper uses the paddle to slice under the snow a few inch towards the footprint until he come right under the footprint at the level where the animals foot cam to a rest. The paddle is then wiggled side to side a bit in order to excavate a place for the trap to set, the trap is slid into position so that the pan is directly where the animals foot will come down the next time it steps in it's old track.

The trap chain is buried back towards where the trapper is standing along with the drag. The paddle is then used to fill the hole back in that was originally made, and as the trapper backs away he uses a large feather duster to smooth everything off as well as uses the paddle and duster to fill in his boot tracks. No scent or anything else is used that may cause the animal to alter it's original course.

I wish I had a video of this type of set. It's very simple and makes a lot of sense when you stop to think about it. A little new snow or wind makes it even better.

I just found two old scanned pictures I took of the final steps of the process. The image on the top a stick is pointed at the track under which the trap pan lays. The picture on the bottom is dusting the area over upon retreat. Notice in the picture the trapper is standing on the edge of a road where the animal crosses, an easy place to disguise your presence from the animal.