I had to explain the swing thing several times to my wife at first when she first started but she has a pretty level swing now. A lot of people don't realize how much stuff they miss or skip because of their swing and how fast they walk as they swing. I guess this is one of the things that actually helps when you hunt an already hunted spot unless they really gridded correctly like Cru does in England. This is why we sometimes are amazed to find something that we should have found previously but missed. Smokey speaks of walking between and behind two other detectors and finding stuff that they missed because of no over lap in swings between them. So many variables that are sometimes overlooked, especially by newbies or people in a hurry.