well I hunt old homes 80-90% of the time, sometimes schools, rarely parks
I use the 3khz coil 100% of the time, have not taken it off since I bought it. My area has pretty mild ground, The 10.5 DD coil did not perform well here.
sensitivity, I run at 25 at almost every site, RARELY do I have to lower it, if I do I try 24, then 23, if I am getting a lot of interference and noise cancel does not take care of it. If I have to go much below 22-23, I almost hate to hunt an old site, feel like I lose too much depth. But that is just me.
Threshold, just barely audible, differs on location, if a lot of traffic I might have to bump it up a bit, if in country and it is quiet I have it low as possible
always keep target stabilizer on 100% of the time
I run pattern one 100% of the time
multible tones all the time
I hunt primarily by "sound" once I learned the tones, I really do NOT pay attention to numbers on screen. Where I hunt I do not get perfect signals, there is so much iron at old homesteads, and it throws off the numbers constantly, but if you listen to the tone, your machine will tell you if there is a good target down there. After digging indians that bounced from #8 all the way to #44 and silver that went from #20- #46.........I started ignoring numbers. I walk around iffy signals swing over it and 3-4 directions, if tone sounds "sweet" to my ear, I dig. I can almost guess 8 out of 10 times if it will be a coin, regardless of the numbers bouncing. Since switching to my method of using multi tones, pattern one, AND digging by sound instead of numbers. My silver, and deep indian numbers have increased GREATLY.
I can only imagine all the coins I have dismissed as junk and just kept on walking because the numbers jumped too much. Not to mention all the coins I missed because I never heard the soft whisper of deep silver because of all the iron grunts when I was running all metal.
Mark convinced me back in spring, early summer, that I was walking right over silver using all metal, I argued up and down with him, but agreed to give it a try for one week. I went to an old school I had hunted before in all metal, first trip there I covered an area I hunted before, but this time I used pattern one. I found 3 silver that day.
went back again and went over more of the same area and once again found 4 silvers, where I could not find any before in all metal. This school is the most iron infested mess you can dream of. But using pat. 1 allowed me to "hear" those high tone whispers of silver, where before all I heard was iron grunts.
When I located a good deep silver target, I switched to all metal and went over the target again, NO whisper, only heard the iron grunt. So Mark was right, I WAS walking right over silver and missing it completely.
Don't take my word as gospel, but give it a shot, what do you have to lose? You see Mark's finds, he has 140+ silvers this year, I am at 94.