Here is my two cents worth,,,,,
-run sens in man at or above 25 if you can live with the noise,,,,,
-use LONG tones , this will make a very noticeable difference in the chirps and blips and a good target,,,, the good targets will jump out at you thru the chirps with a long distinct tone.
With all due respect to the first responder ,,,,,
-run in ground difficult,,,, ground neutral is for aerated soil like sand and plowed fields.
- ALWAYS run in "trash high", this will tell the etrac to sound off on a good target even if a rejected and larger target is present, even if it's a bigger target than the good one. If the etrac is set to trash low it will report the LARGEST target under the coil,,,,, this would give you a null ( assuming you have that target disc out, like a big piece of foil) instead of a high tone of a smaller coin sized target.
-Leave the "deep on" in the "deep off" position,,,, all it dose is run a signal thru more filtering to help decide what it is,,,,, test have shown that this setting does little more than slow the TID and does not give a consistent reading with multiple passes.
-You can run fast on if you like, I do in heavy trash and it supposedly clips the front and rear portions of the signal off to help get ready for the next signal,,,, but when using "long tones" it has little effect and you still hear a good target thru all the chirps.
=absolutely go slow and if you hear and see a long tone and a good number go over if several times passing the coil COMPLETELY over the target from one side to the other,,,,, from clean ground over target back to clean ground...... if needed flip it to Quick mask this will clear up allot of iffy signals and if you see good numbers DIG !!!
-I all so use PP mode which is as close to all metal you can get with the etrac.... look at where the cursor goes and if it stays up in the upper 2/3 's of the screen and sounds like a small target DIG!!!!
all these tricks just give you a set of clues as to dig it or not,,,,, after running all these tests thru if you cannot make up in your own mind if it's good or not,,,,, better to dig and be sure,,,,, this is just how I roll,,,,, take all the advice you get and make it work for you HH