Hey PARick, I actually go pretty far with the no bait thing for woodchucks and skunks, when I can at den sites too, with no regrets. I could use bait of course, but just don't have a need for it. Saves a lot of time and money not fooling with it, replacing, changing, having it go bad, just handling it. I got a gallon of Blackies bait many years ago and still have it. Found that trails in deep grass were fine, between bushes, along walls, under fences, sometimes with short drift fencing using aluminum sheets that go in in seconds. Skunks and chucks are pretty easy to direct. I like the metal nose cones with flaps because they fit on the trap in transit and take up no more space, light weight. If you catch a skunk when chuck trapping, as does happen from time to time, the metal cover keeps them from spraying. With a solid cover, if you do use bait, it does keep the bait fresher, no sun or rain on it. Of all the guys who dropped the use of bait with single door traps, while switching to double door traps without bait, I never heard of any going back to the old ways. Just too easy this way.
If a hillside is steep I will sometimes try to dig it out a bit and level it up somewhat, though perfectly level is not necessary. If you don't want to do any digging you can use a longer 30 inch trap on the hillsides.