QuartzCreek,
</font><font color="blue" class="small">( One area I'm looking at falls about 2-3ft from high to low and I'm wondering whether a box blade and loader would really be able to put this into level.)</font>
It does take some finess to get it right but can be done. You don't say how long a run between the rise and falls but you can level them with the box blade. After some practice, I got pretty good with mine.
This is what I did to get the "humps" out.
I used the scarifiers on the tops to loosen the soil and then back bladed in reverse with the boxblade. When you're pulling it, your tires ride up and down the slopes and the box tends to follow the contours. By backing into the ripped area, the rear blade pushes the dirt off the top before your tires get on the rise. You can "cut the tops off that way. Do this using several passes so you dont cut too deep. Then lift the scarifiers and smooth it out. Aother thing I do is remove the rocks that are rolling around in the box when smoothing. Otherwise they'll end up getting lodged between the front and rear blades and gouging you grade leaving a small "rut".
I've done quite a bit on my ½ mile long dirt road and am very pleased with the way it turned out. Here's a pic of my road. It shows some streaks from the rocks in the box but not bad. Also, by backing blading in reverse, I was able to cut an exit for water to escape. It's dirt, so I'm constantly smoothing it. Gives me an excuse to get seat time. /forums/images/graemlins/smile.gif