Just wondering if anyone hunts without any discrimination at all. I just watched a video of a guy hunting in all metal in a supposedly hunted out park. He got a small high pitched signal for just a moment and then it disappeared and he got nothing but an iron signal. He dug to investigate the peep of a high tone and pulled a Mercury dime out of the ground. It was next to a large chunk of iron. He said in the video that is why he is a big advocate of hunting in all metal with his Minelab. He also said that he wouldn't have gotten the high pitched peep if he used any discrimination at all...and that's why everyone else missed that Merc. I think it's worth a try but am wondering if anyone else hunts in all metal. I would think it would be no problem with 4 tone or multi. The pitch of the tones does the job of discrimination. So why use any discrimination?