i am needing a decent program setup for the explorer geared mainly for gold rings while eliminating as many pulltabs as possible. I have had several people tell me about rings they have lost at a local baseball diamond from as far back as 7 years ago. There is going to be a lot of pulltabs because of consession stand and simple fact that i can see a lot lying on top of ground. Also what depth should you expect to see gold rings lost from as far back as 7 years.