I hunt only the beach and have noticed a difference in the wet and dry. Today I was getting a solid 59 vdi in the wet sand, I'm thinking nickel, pull tab, maybe a gold ring. Heck no, a bottle cap, not once, not twice but 3 times I got fooled. I have also had quarters ring up in the low 70's, pennies low thirties to 91. I guess the combination of the black sand and salt water can play tricks on you. I'm sure its the same with the different combinations of soil across the country. All the videos on air tests, test gardens and opinions are entertaining but not always that easy. I've dug really good signals and it turns out to be junk and then dig a really iffy signal and it turns out to be gold or silver, go figure. Nobody has it figured out, we are all just guessing and hoping for the best, in my opinion.