I hunt with friends that use the E-Trac's, have one my self,,,it has helped me a lot to check their targets....
I run my AT Pro in Pro mode, nothing notched out, iron disc at 35,,iron audio on and max sens.
Most of my time has been with the 5x8 coil...
I swing from left to right and then go back over the same ground, swinging from right back to the left, if I hear a iffy sound,, I check it by moving around the target...
If you hunt from north to south, then east to west, and then like, se to nw....Don't get in a hurry..
I have the 4.5" SS con. coil,the 6x9 con. coil and the 5x8 dd coil and the 8x11 dd coil....
I have checked some of my friends targets,, with one using the 11" pro coil or the 12x15 sef coil on his ET.
I can tell you this,, on the real deep coins, nothing shows on the screen,,but there is a faint sound,, those are the ones you need to dig,,,,not all the time,but once and a while,, a deep coin....
My friend has been using the E T for like 3 or 4 yrs,,,I only got my AT pro in Feb.....
All the sites that we hunt have been pounded for years,,, so nothing is ever hunted out...
We were hunting a park one time,,my friend was using his E T with the 11" coil,,I was using my E T with the X-8" coil,,my friend marked a target,,,I could not pick up the target,, I tried the sens in manual and raised the sens,, could not pick up the target,,,my friend dug the target,, it was a old wheatie down about 7",,,but the wheatie was in the side of the hole, almost straight up and down,, so i am thinking the bigger coil works better on coins that are on edge...
Last time that I hunted,, because of the temps being over 100deg, I dug my first wheatie, 1915 with the 4.5 ss coil,, this was not my first wheatie,,, but the first with the small coil.,,
It is fun to be out hunting and a light rain blows in,, and watch my friends run for their trucks..
Take your time,, it will come to you..
HH...Bj