I went out a couple of times yesterday at a local park and a schoolyard, about an a hour and a half to two hours at each spot. Both times, and as happens each time I go out, when I'm packing up it occurs to me how small an area I actually detected. I tend to concentrate on getting a good 1/3 overlap with my HF DD Eliptical with each swing, and keeping my swing speed about 2 seconds across a width of about 4+ feet or so, but I'd say that after an hour I've only hit a 50' or 75' square area. I think much of it is that I dig iffy targets but I'm ok with that. For instance I dug one yesterday where the tones danced a little, but not enough to bypass and it turned out to be a nickel about about six inches. feel like I'm being thorough enough where I'm confident I'm not missing much, but when I see pictures of folks' day trips to big parks and fields they detected in a day I wonder if I'm being a little slow. What are you're thoughts and experience?