Just to give you an idea of the trash to treasure ratio, I'll provide two pictures from the same hunt - one treasure, one trash.
Treasure:
Trash:
And that ring was not made of precious metal, but every ring is precious to me. I'll take it. I'd rather have one crap ring than $5 in clad. I don't know how to explain it. It's like crack. You get that first ring and then you just want rings, and more rings. It doesn't matter what they're made of. MOAR RINGZ.
This is pretty normal with the Deus for me. I'm still learning the machine and I'm digging signals that I know not to in order to improve my confidence, but I'm also very likely to dig anything that's shallow unless it's a completely crap signal. When I hit an obvious piece of can slaw nearly on the surface, I take a few seconds to "pop" it and then I sweep again. It may have been hiding something and the park is a better place for it, and it's not like it took any serious effort to recover. If it's crap that can be recovered easily, I recover it anyway - as opposed to deep crap, which I dig because it might be something nice but it never is.
Most of the gold lives in the trash range. If you want all of the gold, you have to dig some trash. I want all of the gold, so I dig some trash. It's nothing to be ashamed of. It merely implies that you're going after the high value targets that the cherry pickers leave behind - they're only after silver. But how much silver will a gold ring buy?
If I have a two-way repeatable in the trash range, I dig it. I'll even dig it if it's not repeatable, just as long as it's shallow. One piece of gold makes up for a lot of bottle caps.
This (and nearly all of my other finds, and certainly all of my better finds) were made in parks in western Washington that have been hit hard and often. I haven't found silver in them and I doubt that it still exists here. If the old stuff is gone, go for the new stuff. Nothing wrong with gold, right?