Metal Detecting - Can a favorite spot be hunted out?

Hello everyone,
Yesterday I did a 5-hour dirt fishing trip at Brooklyn's Fort Greene Park.
My best finds were 9 Wheat Cents and a Model T Stem cover nut.

No silver

Here are my finds..

Wheat Cents - Oldest were 1918 & 1939

Everything

---------------------------------------------------------------------------​

It's been a bit frustrating lately because I'm noticing that it has been getter harder to find silver coins at some of my favorite locations. Years of detecting and the competition from other detectorists has probably wiped out the goodies!
That includes relics and jewelry.

I want to share some of my finds from the previous hunts at Fort Green Park starting with 2 of my best finds..

Civil War Marine Corp Button


1876 Seated Dime


Many examples of different hunts there