I have to have a small private chuckle as I read this thread. As an old fart, I remember when I put my first GPS unit on board my boat in 1993 to help in coastal navigation on Lake Superior. It was a Garmin GPSMAP 200, a big ugly thing that weighted about 20 pounds and bolted up near the helm. I was tickled any time I got an EPE under 300 feet. It sure wasn't perfect but it kept me off the rocks.
I had done some sport fish chartering in south Florida using Loran C to locate reefs that were hot spots for grouper and other gamefish, and if you could get within 200 yards of the target on the first pass you were having a good day.
Later in 1993 I attended the big EAA Air Show in Oshkosh, Wisconsin where I witnessed, along with about 100,000 other spectators, one of the first demonstrations of of a GPS guided "hands off" landing of a small private aircraft. They had some localized augmentation system set up which guided the plane to the middle of the runway and about 50 feet above it, at which point the pilot took over. Those of us who knew a little about GPS in those days were blown away.
I guess the point I am trying to make is fairly simple. As a newbie to geocaching (but enjoying it immensely) and if Moore's Law holds true, what fun is it going to be in a couple or three years if your hand-held GPS unit (under some super-WAAS) can place you within 12 inches of the cache? Are we then going to go back to 17th century treasure hunting based on offsets? I.E., find the GPS co-ordinates, take six paces north to the big oak tree, go west about 20 meters and look for the triangle shaped rock?
I guess I am on Anthony's side. Get within 10 meters and turn the thing off and WAAS be damned.
Regards to all,
Dave
P.S. The old Garmin GPSMAP200 is still chunkin' away up on Superior and we haven't hit any rocks yet.