The little whoops or washboards are the hardest to dress IMO. Since everone uses gauge wheels, I guess they work!

But if you go over 2" deep whoop and fill in the dip. You have filled it with loose non compacted soil. then the gauge wheel hits it and compacts it, and the dip is still there. Point is compaction is needed. How many of us have made a perfect looking area, then walk on it. Nothing compacted.
The guys on our lease are/were in the business of making roads to oil drilling pads. These roads had to hold up trucks and stuff. The one at our deer/fishing lease doesn't see anything that heavy but it is bottom land. Their main tool is a small dozer. Dig out the ditches first since this is where the road is pushed into AND without drainage a road won't last long. then after the pile in the middle, level it out. The dozer helps with compaction but these guys can ususlly do it in 4 passes. 1 up the left ditch, 2 up the right ditch, 3-4 on the road. They also know about dirt conditions. One day we went down to the bottom and the road was a mess. Surely Edwin didn't do this. He did but stopped because the ground was to wet if I recall and you can't work with it like that. (BTW, this is pure East Texas river bottom black gumbo..if you use a PHD on it, the spoils ALL come up in round quarter size balls, funnest thing ever).
I realize materials are different, but knowledge of your material, and drainage IMO are what make roads last. And in the end, a road you have to maintain only once a year is a road you've constructed correctly. If you have to maintain a road monthly and all you are doing is driving cars on it, is a road that wasn't built properly for the conditions in the first place.
And what do the pros use...a road maintainer/road grader. Blade in the middle, gauge wheels in the back so to speak (and a lot of weight). But when I see them, almost all of the time they seem to be taking the road "down" to the proper level. But in either case, there is usually a pack of rollers following behind!
Rob