I have notice you can tell if a target is long or round using target trace.1 target under coil say a bottle cap will splatter horizontally both ways but a nail will splatter vertically one way and horizontally the other way.Coins don't splatter.SO if you have a nail and a coin under the coil at the same time you can tell which is which by circling the targets. Anybody else see anything to this effect or can add to this .Thankx