You have to dig a lot of trash for the jewelry. Plus, there has to be targets there for you to find,whether it be coin or jewelry. Ive never used an MXT but have used the M6. The MXT and M6 are easy machines to get going with, but, you still have to use them a great deal to learn what they may be telling you down deeper. But, I have found coins at 6 inches and my M6 easily identified them unless some trash was in close proximity or the coin was on edge.
I know how you feel, and you arent the only one thats been there. The places youve hunted may just have been pounded to death, but that doesnt mean there arent any other coins there. They may just be deep enough to be out of reach or masked by trash targets. I have dug and will still dig, a lot of trash, chasing iffy signals. MXT Pro is a good machine,no doubts, versatile also, wish I had one. I just bought a new machine,going thru a learning process, and having a hard time. Last couple days, I hunted a couple old vacant houses from the twenties and all I got were numerous memorials, 3 wheaties and a couple Rosies; and all around 4 to 5 inches. I definetly feel like there is something older there. Deeper??? Masked??? dunno, maybe its been hit before. And detecting is funny, or its probably me, Im a dummy, but Ive hit a spot and felt the way you do, or what just happened to me the last couple days; I will leave that spot, find another and come back to that spot several weeks, months later and bingo, make a nice find or two. Another thing I thought about, If you have a large area, dont try to eat the whole pie, eat a piece at a time. Grid, ( using some type of stakes or visual reference) a small area, working it one way, crisscross it and then work on a diagonal.
Dunno how you are setting your MXT up or just how experienced you are with it. You can crank it up a bit, if you can live with the chatter. Also dont know how much discrimination you are running. To much disc could hurt.
Digging tools, I use a Lesche hand digger when on public areas, using the plug method.
You may be like me and have no one close by to help you out, get going. Ive learned most of mine from this website mainly, lot of real nice people here.
Im sure Nancy and Larry will chime in, they are both very experienced and always happy to help.
HH,
John