Part of my driveway is on a hill, when I built that part I used a straight blade to pull the ditches, and angled it so the dirt would be thrown up on the driveway. After I got the base down, I wanted to increase the depth of the ditches. I used the box blade, since I didn't want the dirt on either side of the ditch. Once I got it in piles, I loaded it on my little dump and hauled it off. I would say that sums up the difference in the two blades. Since I've done that I haven't found much use for either one. To spread base I usually use the FEL, and back drag it. I had an idea to use the scarifiers to get rid of some blankity blank prickly pear. It didn't work too well. I'll have to agree with Bird on the bouncing, hopping, thing.