Garrets just jump around on deep signals, its easy to hit a quarter at 8 inches on that machine. Few tips would be listen to consistent tones about 2 to 3 dings solid it will jump to iron a lot aswell. Also dig deep signals that seem to have more dings on one side more than the other.Example would be you barely hit swinging from left to right but from right to left you almost always get a hit. Another tip would be to change your sensitivity constantly high trash i would use about 3 to 4 bars notched out, but also i have had luck with another method. What you do is run an area on 4 bars then rerun maybe another day in the same spot on 5 bars, 6 bars,etc. This method will find you more coins in spots you have found some before. Garrets have a big learning curve but i have easily out done very expensive machines, just trust your garret, dont get lazy and dig anything that rings consistently a few times even if it goes to the dreaded iron. Any questions just pm me. GL and HH