Here's a typical example of going really slow with an Etrac on a very well detected small pasture field that has now given me 11 hammered over the last 2 years........
Just been out this week and pulled this small hammered up from my favourite site, it looks like an Elizabeth 1st half groat London mint 1582 - 1602.
This site has been done by just about every detector known to man over the past 2 years, so I put the Etrac on full sens and full Volume gain in MTC, and a one pence sized block of discrim in the right hand bottom corner, also turned both recovery deep and fast OFF. Most important thing was I worked very slowly, it's surprising how many tiny blips you can miss going too fast.
I found 6 buttons and various bits of small lead and brass fragments over a 3 hour session, and the hammered was a barely audible low grunt but it was a repeatable signal when cross swept, if I had been going a bit faster it would have been missed. Only thing that spoilt my day was the detector started giving false signals after 2 hours, especially when I held the coil up in the air on it's edge . This can only mean one thing, water in the coil, I have had this happen to me before on the original stock coil and it had to be replaced, looks like I will be buying a new Ultimate pretty soon, at least I can put the original coil back on for now though.