I've been metal detecting since 1983 for 27 years. I bought a metal detector to hunt for nails, guns, horseshoes, bullets and anything else people put in or on trees. My neighbor and I ran a circa 1910 saw mill. Let me tell you when you hit one of the mentions items above, they really tear up a saw blade. I'm talking a blade with replaceable teeth. Each Saw blade tooth cost at that time $23 and if for example you hit a nail, it would usually mess up 10 to 12 teeth.
After those younger and dumber days, I started detecting old picnic area's that farmers would tell be about at the local coffee shop. I still hunt those same sites today. Boy what the old timers taught and told me has been invaluable all these years.
My partner and I still get out a least once a week, maybe more in cooler weather, like everyday. LOL I like to relic hunt the best. Hunting for a old one room school house or church that no longer stands and finding the treasure left behind, gives me the greatest thrill.
Lately I have been fortunate enough to be able to hunt some Civil War Winter camps in Virginia. Now you talk about a thrill, to hold an item that a soldier lost some 140 years ago, it doesn't get any better than that.
Thanks for the question. HH, Ringfinder