Hit or miss I think accurately describes it. They are some of my more favorite places to detect because they are usually unhunted.
It's real hard to figure out how some coins end up where they do but I've found IH's on footpaths that people used like my parents to get from point A to point B as a shortcut. As a matter of fact, it was one my mother had told me about that I found the IH's.
I know as a kid back in the early 60's, the paths we took to get to the park were steep and we'd slip and fall, roll or slide in grassy areas just for fun, etc. One retention wall that overlooked a road was a nice spot to find coins as kids would sit there to take a break from their hikes to the local pool that wasn't so local to them.
A lot of these paths around here are still visable if you know what your looking for and understand how people thought back in the day.
One common overlooked path, and I think you'll understand what I'm trying to say here without me being too graphic, is those paths around some local parks where men have a tendancy to walk down with other men...and once clothing is dropped...well...sometimes the pockets empty or maybe that hidden wedding band one stuck in his pocket drops out....you get the picture. The only harassment you get from those types are pretty much what you'd get from any curious onlooker. Never been propositioned myself in a situation like that. I think a lot of the bigger parks have places like that.
The hunt is only limited by the imagination. Look over some of the older topos and figure how you'd have gotten from one place to another without a car in the shortest amount of time and with some ease. Really old foot paths followed animal trails and to this day may only be used by animals, but the past may still be in the ground.
Al