Tommy, we ALL had the same problem as you when we started out. One thing you should have is a pinpointer. These can be expensive. $100 or more is a bit excessive for what you get in electronic components. The manufacturers know that we need them so they sock it to us. A quick way to find your object which has probably taken on the color of it's earthy surroundings is to quickly split the pile of dirt with your digger. Check each pile with the coil, and split it again once you have found the object, then maybe split that pile one more time. This will minimize the amount of dirt you have to look through.
If you have a pinpointer, and you are on a grassy area and you know the depth of your target, cut a slit about 4 to 5 inches long and 1 inch short of the depth, and rock the soil back and forth with the blade to make a 1 inch gap now stick the probe into the gap and move it back and forth along the 5 inch area. If the target dosnt respond, cut a slit across the first in an + fashion and do the same with the probe. Once you find your target sweep the coil over that spot and make a mental note of where it is situated within the coil. That may be at dead center the top, bottom, or to the sides. Coils can vary from one to the other. You are listening for the most defined tone in the all metal mode. Once the object is located, you may be able to extricate it with just your finger. If not, minimal digging should retrieve it. By cutting a slit in the turf instead of taking out a plug allows the grass to reknit itself faster. Most grasses are rhizomes with horizontal roots. Once you have your target, merely step the + back into place. No fuss, no muss, and no dead spot in the grass. Hope this helps, your into a great hobby. The less damage to the area your digging, the better for all of us........Gil