I went to a few places today ( places I have been before) and was trying to detect the Tot Lots. I find that I can not even get close to poles with the 11 inch coil. Now I am finding targets under the Tot lots in the dirt. I had the machine tell me that there was a quarter under the coil , but did not expect to find it after going thru the Tot Lot material and then digging into the dirt. I am looking forward to going to places I have been before, but a little deeper.