[ragkar]

It works well in my opinion. However the maximum depth spec is misleading because of the architecture. For instance if you can dig six feet straight down, then at a distance of four feet you can dig only three feet down.
It's a rather difficult instrument to master. Figure on at least fifty hours of practice before you're pretty good at it.
Another thing that I learned the hard way, is to find a level firm area to store it. I parked on soft ground and the feet started to dig in so that I couldn't lift the mechanism enough to install it. And make sure that there is manuvering room in front.