papa,
I have used the mason hammer and another similar tool that you can get at home depot (url below) which has a bit longer handle than the mason hammer:
www.homedepot.com/Outdoors-Garden-Center...&catalogId=10053
The one I had was the same head as that but had a wooden handle (older model I guess).
The mason hammer and that tool will give you similar results - both work fine as far as short handle tools go but you still got to bend over most of the time or get on your knees to dig and you don't have a lot of leverage with the short handle tools.
Often when I do find a stalk of ginseng growing between two roots, if they are not too big and stout I can either chop them in two or break them with my long handle hoe tool by inserting the blade between the two and prying up with that long handle.
Some of you looking for something more than a flat head screwdriver but not wanting to spend a lot of $$$ might want to try out a tool like that one at home depo. It is fairly cheap at 14.97 and does work well enough. Note - the handle on that tool is 16\" long.
TNhunter