That's good stuff, ghound. I feel like I've only begun to learn how flexible the Rutus is and still have some working dialing it in. But that's a fun part of the hobby for me.
Have you done much with the dual mode? I understand what it's doing, but need to learn what the benefit of hunting in dual mode is.
Dual mode, what can it do for you?
If you are say detecting in a field with not much nails and trash,,,deeper finds when running disc mode (not dual mode),,the deeper finds will need to be flushed moreso with coil to get tone(detect). At fringe depth detectable here, coil center coming over the target more critical.
Now, fast forward to dual mode, in a similar aite mentioned above,,,the All Metal portion will allow to locate suspect targets with more coil position latitude,,even the deeper finds.
Using dual mode, once you locate, you will center coil, and Rutus may indeed sound off tonally through the disc channel,,with ID to boot.
Some targets the disc mode may not sound off on,yet the am side does,,,as a person pivots around these kinds of targets, and depending on site history, a person may dig some of these.
Cylindrical shaped things like bullets,,and coins,,will have a more round presentation as you listen to the AM side of things.
A good idea to bury some say civil war bullets and deeper coins,, like at a ft deep, and then practice listening to how they sound,,how the tone around the edges of the targets drops off.
It does take some practice here to get decently good with this.
And yes a person will dig some iron too,,but can dig some nidpce finds as well.
Hope this helps.
Really busy sites as stated by Ghound,,not a good place to have am turned on.