Aye, Gold huntin ye olde (or new-e) parks.... tis a fine thing indeed!
I'm pretty much a Park Gold Hunter as not too many beaches nearby, lol.... as I really enjoy it.
Its work! lots of it. Lol.
The gold I have found, has come in anywhere from the low end of foil (small toe ring, clasp etc)... all the way up to about the Copper Penny range.... yep, 22K and fairly large.... I find gold content will cause the IDs to vary, as will size and depth (the higher the Karat for the size, the higher the ID)... hence, I pretty much dig it all.
With my Tesoros.. I set to MIN disc (yup, I know) and Max sensitivity as to not chatter... and go for it... never ceases to amaze me... I don't even play the DISC game with my Tesoros, unless I get bored... lol, then I'll do it just to see what the machine "thinks" is there, lol. But really... doesn't matter, I'm digging it. Fairly often I get pleasantly surprised with a chunk ol the yellow stuff...
With my ID machines, yep, even though they are ID machines... they don't dictate what I dig... for me its just "fun" to see what the machine thinks (yup, said it again)... but, I'm digging it anyways. Again, a lot of work, but its OK... I'm doing this mainly for fun and as a gold hunter (hey, thats fun for me)... I'm gonna dig it all.
As for signals, yeah, always love those nice round, repeatable, and "golf Ball" size signals... thinking.... Tab, Coin or Gold each time... and again, from time to time get that nice ring out of it.
But... there have been many times, where that signal did NOT say that to me... and instead, said, Hmmm, scratchy... elongated etc... and maybe not so repeatable... and for those, sometimes they can be nice gold bracelets, chains, open earrings, cut ring, different shaped pendant... etc...
I always find the non-perfect hits, interesting.
But again, lots and lots (have I said Lots?) of junk, foil, tabs, half tabs, can slaw, hairpins (from time to time lol)... sure, more often than not... but again, i don't mind... as long as gold finds are there as a reward from time, I'm good with it. Lol
Thats fun for me, everyone is different. Some folks think I'm nuts, its ok with me. the rewards have been there enough to keep my fun meter up and running, lol.
So yeah, for me, Disc is way low, or off... and I pretty much will dig it all.
on occasion, when tired... I'll disc out IRON, at the mid end, lol.
Ya'll have fun, and like many said, spend time with the machine and keep learning it... light bulbs will come on... but you still gotta dig it, lol. For me anyways.
Quick Side Note: When I first got into this hobby... I had been told, to set my Tesoro (first machine) disc at the "F" in Foil... and dig it all.... I did, and for 6 months... lots of silver jewelry etc... not any gold... I had thought the machine was perhaps not capable... lol... I then took a small thin gold band... in a plastic small baggy... and 5 inches in ground... then swung my normal way and settings... NADA! Was an eye opener for me... set my DISC to MIN, and tried again... BAM!
Henceforth... with my Tesoros... MIN. Thats it.
Started to find gold after that, coincidence? Maybe, Confidence was definitely up and maybe I was motivated to dig more... I dunno. Lol
Again, have fun!