road grading

I just bought the MF 1723E with loader, blade, box-blade. I bought it with the expressed intention of grading my gravel driveway. However, it seems the 3-point hitch does not float. Now every bump and pothole has been multiplied several times. The driveway is far worse than before; one bump...

I am looking for a land leveler to set / reset the camber on some dirt roads, and I came across a land leveler from Notch Manufacturing. These aren't gravel roads, so I am less interested in ripper teeth. Anyone here have any experience with it? It seems like a useful design to be able to...