A few pointers,
Be aware of the moon

glare of the wire will make 'em go round.
Get the snare setup under a softwood canopy (on a trail,lol) if possable.
You can funnel the rabbit , ie, stick up small twigs either side, and under , can even extend the side stick out into an opening v, not carried away here, just make the easy route throught the snare.
If your only option is out in the open alder , you can take small curved twigs that will mask the wire, but don't have it so the twigs get caught inside the snare when it closes.
If you tie the snare to an alder, make it 3 or 4 ft long , and fresh, not dry dead wood.(can use the same lumber all season, makes picking up your snares a snap)
Don't step into trails, but to the side.
if you want to consentrate the rabbits to a certain area, drop a couple birch trees (food)
Watch the weather, as a snow fall will mess your sets. (check every day)
Best to make a circuit through the woods , better than in and back out, twice the area coverage.
Use the copper wire , its cheap, can get a bunch of snares from one rool.
Take a hatchet / 22 rimfire with you if you can.
ETC......

Good call MD, don't want the rabbit to go over (crossed up evergreen branches if required) or under (2 inches off the deck with a couple small twigs to keep the snare from turning).