FREESONE! I learned a new word today! I'm nearly giddy as a result.
Sometimes any fresh/exposed earth.
A digging project. Soil being imported or exported.
I have not answered a free dirt add in the advertisements metal detector in hand...But have encountered fresh diggings and detected them.
Some can wait *ideal for your stituation) , others are brief opportunities.
Himself may encounter a land clearing site. Or even single giant tree event. Some standing atop history. Afterall , what better way to look for saw damaging metal hidden under a trees bark? And since I have the detector , would you object during my lunch if I swung about the tree base a bit?
True story.
Two gents were hunting the old feed mill that had been closed awhile.
I drove up near and demanded the nearest surrender any found silver due to his trespassing. He laughed and we B.S.'d a bit.
I mentioned the fresh dirt piles in a park being worked near and he said he'd seen that too. (I'd successfully worked piles there prior.)
Here's the thing , no one I know of detected those fresh piles.
Any detecting where they were removed from should hit stuff still. Stuff brought up from beyond most detectors range.
So where's the disturbed ground you two can hunt when it dries a bit?
headlands , bald , fallow , swimming pool going in or coming out on an estate.... Be permissioned and hit it!
Just watch out for snakes.
L.o.l.