mud i would do what neptunus said,plus set your sensativity as high as you can, go in all metal mode and try again. go REAL slow and overlap your swings by at least a half if not by a third. if you think about it.....your coil sends a signal into the ground in an upside down cone shape. so the deeper an object is in the ground,the less likely it is that your coil passed directly over it.you probably have missed stuff and didnt even know it.if you draw a saw tooth design on a piece of paper, its easier to understand what im talking about. just imagine your coil sitting at the top of the wide part of the saw tooth, and it really comes into perspective.it will take forever to search a small area and you will need to dig EVERYTHING but.......its your yard and you have the time right? there will be times you dont find anything but remember.........when doing this type of detecting, your looking for quality not quantity! you can always hit the schoolyard if you want a lot of newer coins.also,listen for faint iffy signals. and old indian head at 6 or 7 inches will sound a lot different than a lincoln at 1 inch. use all metal mode to get a little more depth. just squeezing another half inch of depth out of your machine could make all the differance.lately ive been spending a lot of time trying to learn how to find old coins and this is some of the stuff ive learned. i am determined to start finding the old stuff!!(although i havnt found any yet!!) also ....another thing, research is key. go to the library and check out a few old books on your city/town/counties history. look for amusement parks,circuses,swimming holes. try to find out what people did for fun and where it was and what is there now. you cant find the old coins where they aint!!just thought i would pass along some the tips i have read about recently.
