Air test the machine with what you hope to find. Study how to ground balance the md. At first with any new md I dig anything repeatable in two directions. You can also try watching guys use the machine on U tube. Good luck
1970 COMPASS-
WHITES SILVER EAGLE-
WHITES DFX, 4X6DD COIL, 6X8DD COIL, 950 COIL, 10X12SEF COIL-
GARRETT PRO POINTER AT, GARRETT AT PRO , MINELAB EXPLORER SE with 8.5x12.5 Cors coil