Hey guys : Yes it's no secret that gold rings and aluminum junk share the same TID zones :/ Thus yes, it's true that if you want to dig gold rings, that you can't disc. out tabs, foil wads, can shrapnel, etc....
But the "secret to finding gold rings" is NOT to lower the disc. knob and dig aluminum junk until your arms fall off. I can think of junky blighted inner city parks where the ratio of aluminum junk to each gold ring would EASILY be 500 to 1 (or worse).
Instead, the "secret to finding gold rings", is : Location Location Location. There are places where the ratios aren't as punishing. Example: Swim beaches . Especially the ocean beaches, after storms erode them. Then all the light-weight aluminum is washed out, leaving only the heavy targets . Fresh-water swim lakes (if you are in-land) is an option. And let's face it: Sand is easier to dig in. Doh ! And for land/turf, there are zones where the junk ratio isn't as punishing. Like sand wrestle pits, sand volley-ball pits (where frolicking motions add to the odds of jewelry losses). And for turf: Athletics (like soccer, etc...) up the odds.
And places to AVOID the "strip-mine" method, would be: Any places where eating and drinking are going on . Eg.: picnic table zones. Because eating = foil, and drinking = tabs and can-slaw. BBQ pit areas = molten aluminum blobs. But notice that grass that's strictly for sports (soccer fields, football fields, etc....) is not the same image of people going out for picnics out there. So your junk ratio is much less punishing.
Thus as you can see, the secret to gold rings, is NOT "dig aluminum till your arms fall off". Instead, it's : Location Location Location.