IMO, Dave, you're in a fine place to pick up maybe enough change to get you back home, a League button, or some candy-wrapper foil.
The hard packed dirt at the stand makes it easy for a kid to spot any quarter they might have dropped. Anything else, well, they'll just let it lay there.
A Rolex? Nah. Too EZ for anyone to spot.
Now, if you are able to get on the adult field in Brentwood or Belair, immediately after a celebrity charity game function, you might have a bit of a chance at those items you hope to find.
The 'ladies yellow metal ring with white stone' type things are more frequently discovered where those well manicured digits encounter cold water. It shrinks the well fed finger, and the ring slips off before it's noticed. You'll need a water detector, and wading out to the 4ft depth will be necessary for the best luck. Have a try at Malibu, or Venice Beach, especially after a fancy weight-loss clinic has a field trip or function over a weekend.
Anything with mano a mano hand contact on the sand, like tossing a volleyball around will cause swelling in the fingers, securing that ring quite tightly. But you could find bracelets, earrings, and medallions that were once held by a chain, or pin.
Back when, I enjoyed a ride to the baseball field, or park, with my detector strapped on my back... then a small group of young boys came over, as I arrived, expressed interest in the MAB, and joked, saying they would ride it off
when I got to the other side of the field...
So I joked back...
I told them I'm not going to chase you. In the old days you would just need to be faster than a bullet, and bet against my accuracy, which I'll tell you is still pretty fair. But today, all you gotta be is faster than my cell phone and whoever is on duty... I've already told you it doesn't have much power and you need to pedal up a hill.
Well, they just laughed. I smiled and began detecting the grassy field, asking them if they would help me carry home the ton of gold I hoped to find.

rc
...and good luck to you!
