I would love to see a (honest) video of someone running NO disc and still be able to tell iron from a silver dime. I spent over 80 hours trying to learn it and still dug up way more trash (mostly iron) than treasure. Too bad they don't explain how to use the single tone to discriminate in the owners manual. In fact they don't even mention any nuances, or differences in the single tone in the Vaquero manual. If it were such a viable concept, they would probably mention it instead of saying to set the disc knob where the unwanted targets drop out. I can hear/see all the different metals in the ground (less trash masking) even when in all metal mode with my Minelab. Try using all metal to hunt in a trashy site with any Tesoro.
I would never hunt in no disc and not thumb that knob to figure out the difference between a dime and iron.
I hunt trashy sites 98% of the time with all my detectors including my Tesoros...real trashy sites, sometimes, but I would never consider hunting in all metal unless I was relic hunting.
That is just not how you do it when using these types of units.
They don't mention a ton of things in those manuals like how it is more accurate to turn past the target and then down instead of going up to the fade out point, anything about any nuances in the tones, scratchy sounds, sharp ends or anything else and never have.
That doesn't mean these things aren't real and true, it is just that Tesoro doesn't tell you about them.
Luckily, all this stuff and more has been talked about on all the forums for years, and most Tesoro owners know that it is all true and it works.
I do dig up lots of trash because I can figure out a lot of it but not all of it.
I also dig a ton of trash with my detector with a screen and I choose to on both kinds because I am always looking for gold.
Maybe a bit more trash with the Tesoros but between the two kinds I am about even.
Some people get into the Tesoro way of hunting and really get to understand those tones and nuances, actually grow to love hunting this way, and some don't.
Hey, you gave it a great shot and 80 hours...but hunting with Tesoros is not
your thing and that is evident...using screens is much more logical and better for a guy like you and that is fine and it is great that you know this.
I actually love doing it both ways and love that I have the opportunity to change when I get the whim or urge, and if I do say so myself I got pretty good at both styles of hunting.
Still learning to do both better, though...that will never end.