Update:
Finally got out to the site for a couple hours this evening. Found tons of iron and aluminum, targets everywhere. I'll post some pics soon of what I've found. I do not know my machine well yet, I have a hard time distinguishing which tones mean what. I'm scared to use discriminate at this site, don't want to miss anything neat, or a cache in some iron container. Also I think if I dig everything my learning curve will be faster (but I'm worn out from two hours of digging.) A pic of the site has been dowsed by wvpapaw (standup guy, and much appreciated), did a prelim on his hits tonight and intend to really search a few in the morning. Tele_prospector also offered to dowse and I sent him a pic, waiting on his assessment and can't wait to see what he found (hint, hint tele

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I'm having trouble overlaying WVpawpa's dowse pic with google earth so i can have coords......so i'm just winging his marks based on pics. I searched what I think was close to one of his marks tonight right before dark. Got targets everywhere around it, dug a hole, deep. Roughly a foot of loose soil, then a couple inches of loose gravel (which I found strange as in unnatural) then more loose soil and the lip of a iron pot or bucket! Not so lucky, it was just a 12 inch metal ring.........did find some stiff wire, like a bucket handle? Just to the side of the ring was the end of a half inch metal rod, pointed on the end pointing where the ring was. It was dark and I didn't get it out, left the hole for in the morning. Just can't stop thinking about it, seems odd. I'll update on what happens tomorrow as soon as I can. In the meantime, any thoughts on this post are welcome, this is so fascinating!
Also, I need some advice on cleaning up finds, especially rusty iron etc........this will aid me in posting pics of my finds quicker.
Again big thanks to WVpawpa and a preemptive thank you to tele_prospector!