Been there, done that. Bought the HF body pointer, made for finding guns, knives etc on someones body. Modify'd it, added vibrators, and all to it! I was impressed.......till I got my hands on a Garrett Propointer, thats when I learned just what a pinpointer was. Now you can yell B.S. and enjoy your little toy, but if you ever get your hands on the Garrett (equelled by no-one) you'll toss the HF in the round can! It's like going from a Whites 1960 BFO detector to a Minelab. No joke.......! Naw, I don't work for them. They make an Exceptional pinpointer, that's all. When you get a penny about 2 inches away from it it starts making a slow ticking noise. The closer you get the penny the faster the ticking gets. Then theres the penny trick. By preloading with a penny, you can find a .177 cal BB or a small nugget about an inch away. I kid you not. That's my 2 cents worth. For what it's worth.
I agree the Garrett Propointer is a better pinpointer however it is hard to beat the cost of the HF pinpointer. I actually own a Garrett now and prefer it but it is nice to have a backup that I can loan out if needed as well.