I GB my machine at full SENS in Pro ZERO mode...Once GBed, I start swinging while standing still, and turn down the SENS until the detector stops falsing...If the falsing is not bad, I turn it up one more notch (I can only take so much false chatter in my ears)...I usually set the Iron DISC to 30 (I do not normally hunt for relics, but if I did, I would lower this to the point of DISCing out nails only). If I come across a iffy signal, I check it with the Iron Audio...If it makes a loud and constant grunt, I walk on...If the signal is still iffy, I dig...If I get a strong 80-82 VDI I Pinpoint the target, then lift the coil...If I can lift the coil more than 6 inches and still have the Pinpoint audio...It is usually a can or large junk item. Scratchy 75-78 VDI is usually a screw cap. Scratchy 53-60 VDI is usually a pull tab...40-45 VDI is usually foil or small shredded aluminum...I dig these most of the time, as I do not want to pass up any gold...A clean 50-52 is usually a nickel.
HH,