Sometimes when iam out hunting i will carry a couple of the long different color golf tees.So in the beginning season i will go and if i find a very deep signal or a very odd signal and have time ,i will pinpoint it .Then push a bright color orange or white golf tee in the pinpoint spot..Then i can walk around the area and back and hit the signal from different angle and adjust my machine.Also if hunting with someone and you want them to check out the signal to see what there machine says it is you have the exact spot marked.Good for yard you can mark some junk signal and good signal and go in and bring other machine,s out to test how they are running.