Take a long hard look at how much line a rough terrain crane can hold, most only hold a few hundred feet, once you raise yer boom you've lost 100' already, leaving you only 200-300' to work with tops.
Then figure on needing 2 drums.
Then figure on needing some sort of guyline system, the load of yarding is completely different then standard crane work, the angle of the line is such that most of the force is sideways instead of straight down so the counterweight and outriggers of a standard crane are pretty much useless.
Now haveing said all that, its not impossible. I've heard of folks doing it, but it never seemed to work that well.
