I think being able to find the location of a camouflaged tree stand, feeder, would have alot in common with being able to find a geo cache marker in the woods somewhere.
I've done plenty of land nav course where you have to be within 10 or 20 meters of a point in order to see it. I've used the USGS maps, and they work fine for most things other than plotting points. being a couple hundred meters off on a plot can throw your azimuth off by quite a bit. I realize that most folks here aren't doing land nav for the sort of applications where that is a concern.