Yes, I metal detect and geocache, usually not at the same time. I mostly metal detect on the beach where it is easy to dig/sift for coins, jewelry, even metallic trash which we carry out. Detectorists have clubs and a Code of Ethics, posted on our webpage.
The Treasure Hunter's Code of Ethics
I WILL respect private property and do no treasure hunting without the owner's permission.
I WILL fill all excavations.
I WILL appreciate and protect our heritage of natural resources, wildlife, and private property.
I WILL use thoughtfulness, consideration, and courtesy at all times.
I WILL build fires in designated or safe places only.
I WILL leave gates as found.
I WILL remove and properly dispose of any trash that I find.
I WILL NOT litter.
I WILL NOT destroy property, buildings, or what is left of ghost towns and deserted structures.
I WILL NOT tamper with signs, structural facilities, or equipment.
In Florida, our club page is the Historical Recovery Association of North Florida here. HRANF