Glad I could help!
That is just stunning depth with the gain set so low, you must have some pretty good dirt there.
Did you get the feeling you were hunting with a sniper coil using these settings?
I always do when I lower that sense to below 40 using that big coil...a pretty eye opening or even shocking experience when it happens, isn't it?
Again I always used to chuckle in the past reading posts from owners that knocked the three units built on this platform forever after they bought and then dumped them quick.
In almost every case they took these already overpowered machines and insisted on turning them up too high and over-driving them until they were a chattering, unintelligible mess thinking that was the only way to get the greatest depth.
Like someone buying a Corvette and switching to competition mode to drive to the store for a loaf of bread then complaining it was just too powerful and hard to handle.
Logical thinking...it goes a long way to make sense in all kinds of things we experience in life I have found.
Now you are starting to understand the relationship a little more between the sense and thresh controls.
The ability to control the thresh in disc is one of the prime reasons I love to use this thing so much and that ability might not matter in some sites but it can have advantages in many other sites and conditions I discovered.
I found that using such high thresh does skew the tone when using multi tones and it is not a big deal but when using those options I prefer the thresh at -2 or lower because it just sounds better to me but that is just a personal preference.
Using these same settings you might want to try switching the tones to Dp sometime and see how you like it, (the fastest reaction time in DP because is the only one actually tied directly to what you see on the screen), and them maybe try 1 monotone next which is a favorite of mine hunting here in my iron infested dirt.
Monotone especially, not 1F or 2F, seems to have some of the best unmasking abilities I have experienced so far when you are hunting in heavy trash or iron infested sites.
You can set the disc anywhere you want but Tom Dankowski recommends going to 6 for high performance.
COMPILATION #1
Here he mentions that 0-4 disc is just too much for most to deal with in most iron infested sites but after a lot of practice I got pretty good at it.
Tom - Disc 6 and the F75 LTD
I use disc 6 sometimes but I usually go down to 1 and even 0 when I can and if you learn to do that you would not believe how complete of a picture of all that is happening below you that you will get when you listen and watch the screen doing it this way.
It takes a bit of practice to remember to watch that screen and to get good at processing what you are listening to and seeing on the screen because there is a ton of information coming at you and it comes fast but if you like doing this and you get good at it that is a skill that will serve you well even if you switch to other tone choices and settings.
I was hunting with a friend that used an E Trac once and let him listen to the monotone and he watched the screen as I swung around a small area.
He couldn't make sense of any of it and couldn't believe I could either but he knows I could because I hunted behind him and I kept finding targets he missed in that mineralized iron infested site we were hunting.
I told him it just took a lot of practice to understand it all.
Or, just stick to the settings you are using if you like them because they seem to be working for you.
That's the beauty of this thing, so many totally different settings you can use that all seem to work so well.
Great hunt...you are rocking!