I find it difficult to maintain a swing that overlaps the previous one. Unless you can overlap consistently, a lot of real estate gets missed. I was watching one of Metal Detecting NYC's beach videos and he would take a step, swing left, another step and swing right. Assuming a 28" stride and an 11" coil, he was missing a foot to a foot and a half of ground with each step. I suspect that this is very common so when I hear terms like "pounded" or " heavily" hunted sites I take it with a grain of salt. My front yard has been gone over at least a hundred times but I always find a couple of things every time I do It. Moral of the story is don't pass up a "pounded" site. There's still a lot of land there that hasn't had a coil over it.