Have had the Vaquero for a couple weeks now. Read and reread the manual and am practicing. Was wondering if the experienced could give me a few pointers. I've copied Monte's post on Audio Target Classification and tried to digest that. I've searched my backyard and am getting the iron thing down, but have been going to sand playgrounds in the city park to practice. LOTS of junk. Found three cents today and lots of OTHER stuff. The pull tabs and metal beer caps seem to draw my attention. If trying to find coins in that environment where do I put the disc setting. Seem to get iron well past the iron setting. How high should I run the sensitivity. Not tried super tuning by cranking up the threshold yet. Generally speaking, if there is a signal that is not consistently repeatable is that an indication to move on? What technique is used around metal poles of playground equipment? I think I'm ok on the ground balancing but have read of some running a tad positive. What's that all about? Well that should be enuf for me for now. Am using the 5.75 coil and Killer Bees phones. Thanks Jim