How effective are lawn rollers?

[megotatractor]

trouble with the Harley rake approach, or grading of any kind is that I have about an acre of the three that is on a hillside and any rain would result in gulleys. I know because I had a lot of trouble with gulleys when I had the old barn buried and tried to seed the area. however, grading seems the only option on the larger whoopdedoos. Northern tool has a 48" x 24" roller which weighs 900 pounds filled. I didn't reallize it was the frost that causes the bumpies, it was a mystery. And so SUPERDUTY is most welcome to bring over his 7 ton vibro whatsit anytime.