I am sure that we all remember the picture of the outrigger pad at the bottom of the hole. The contractor, the gods or just the simple law of Mr. Murphy was working against the operator that day. How about this:

Many of you have no doubt seen engineers on a jobsite with a four foot, tapered and pointed steel rod with a “T” handle. This is a ground probe used to determine the soil conditions ‘below’ the surface. Since it behooves all of us to make the correct decision as to the ground conditions before we set up; I would suggest that you arm yourselves with this item. It need not be tapered, but it should be pointed. Some of these have a “slide hammer” for penetrating deep frost layers. I don’t think that is a bad idea; but perhaps not necessary for our needs.

Any tool that helps us do a safer, better job is a good investment.  ;~)

Bob,

Good suggestion, I have had one for years I thought most guys carried one. guess not ? guys, its a great tool !

OE-3

I don't know about down there, but a lot of jobs up here I would not want to be shoving a 4' long probe into the ground.  I know it would be great for determining soil stability but couldn't it also make a great conductor for electricity if stuck in the wrong spot?

The deal isn't to penetrate the length of the rod. It is to give you a better 'take' on the soil. After you use it for a while it makes sense.