On that same topic: If I shoot one at sunset, and know it may take me at least a few hours to find it, and I won't have the help I need to drag it out until morning, should I let it lay until morning, or gut it first, then let it lay? I know the temps will be under 40 overnight. I'm afraid that if I field dress it, the varmints may come around before I get to it in the morning, correct?
When I lived in Wyoming this was a rather common scenario, as many of the places where I downed game were quite remote as compared to a midwest or eastern whitetail woods.
I usually did one of two things if I couldn't get the animal out until the next day. I'd cover the field dressed carcass with brush and logs, or I'd have a small block and tackle and I'd hoist it from a tree so it'd be as far off the ground as possible. In either case I'd also leave a garment of mine that had my scent on it. These techniques seemed to work, as I never had any problems.
Now that I live in coyote and corrupt politician infested Illinois, it's not as big a problem getting game out after I shoot it so I haven't had to do any of this, although if I had to I'd probably go with the block and tackle. I do think that a bigger problem is when you hit one and can't find it until the next day. If the animal did indeed die shortly after you shot it, there might not be much left of it by morning. Coyotes home in on fresh blood like an Illinois elected official after a bribe!