For all you that use the Safaria on the beach, there is program in Andy S, Quattro handbook that rejects everything up to plus+9 and +32 and above that I use to make more time looking for gold items by not digging foil and coins, especially pennies. I reject up to +10 and if I want to find silver jewelry, quarters, and dimes, I accept +37 thru +39. I maybe missing some smaller gold but all the foil that I was digging was not worth it to me. Here are some of my finds from another hunt after work. Except for the tungsen ring and the other ring I found while using the low conductor program.