Squirrel1 - Thx for mentioning you got a coin and yet saw splatter. I had been wondering about that.
I will say this, I hunt in 50 CO and almost every false I get, when checked in Combine, gives me an iron reading. But it seems like most are using the CTX in Combine. 50 CO sure falses a lot more than Combine does but it also misses less imo. Pick your poison though. I tend to go along the lines of what Larry said, you can eliminate most falses by checking the target from 4 directions. I do that but pay close attention to how solid that target is hitting if it is only a 2 way hit. My best and deepest silver find, a 9" quarter sized Dmark, was pretty much a two way hit that pinpointed WAY off center. It was extremely clear from the 2 directions (one plane) it hit though. That was the give away, along with the silver VID. Intuition is a big part of it for me. Using a detector for hours brings you closer to the language it speaks and it is difficult to communicate that with words.
I think it is very difficult to describe the difference between a false hit and a good one. And as others have said, no matter what, you will get fooled. I think digging a lot of targets is key, at least initially. Conditions and responses vary, so you can't really go by what works for some of us across the board - this is with most of the settings imo. That said, it sure is a big help to share and such.
Albert