The problem I see for your set up is if your in the sandy part of Wisc. is that what you pump out has to go to a watering trough of some sort. (Fleet Farm has fiber glass or plastic ones) You can't put it into a pond unless its lined with all the sand in the area.Alot of the people in the Wautoma ,Red Granite as well as all through that area up to StevensPoint and west, have sand points. You go down till you get a good supply of water and your set. If you hit a rock you pull your pipe and move, it's the luck of the draw. There are no sure ways of doing it without the chance of hitting a rock. If you go up where I am in Sawyer Co your garenteed of hitting rock. Good luck and go for it, if you hit water in under 25 feet you have no big investment in it. Like what was said earlier if others in the area have them, why not try it?