It's necessary to reset the pinpoint at times because if you sweep to far off 'pinpoint' while ratcheting down and pick up another near by targets signal it will change the signal on the original pinpoint target. Also, when you switch to pinpoint if you really didn't start off with the best sweep then you won't obtain the best possible pinpoint, better yet you just plain ole messed up your initial timing and positioning so you have to quickly reset the pinpoint and start again.
Pinpointing in Detect mode is not only possible but it is a necessary skill you need to pick up because you will eventually find targets that because of trash, junk, iron, or for various other reasons using Detect mode will be your only choice to pinpoint in. For example, when sweeping in a buried pile of metallic trash you may actually get a good coin signal --the Explorer can do that-- and there will be no way to isolate the coin in pinpoint mode so you just narrow it down in Detect mode as best you can, which you can narrow it down quite well in this mode, and dig away. I've done it several times and I can say that it is incredible to see a mercury dime roll out of the first or second digger full of dirt/trash.
The sound a silver dime and other coins make are sometimes multi-toned, but the average of each signals tone is delivered single toned. You will quickly find that a dime sounds like a dime and a nickel sounds like a nickel even though there is on some a bit of "fluttering" near the edges. The wheaties of course flutter the most as you may have listened to the "fluttering wheatie" sound file. The trick here is to listen to the signal peaks, there will generally be more correct peaks than incorrect off-peaks. For example: (i)incorrect; (c)correct; ....iicccccccccciicccccccccciiccccccccciiccccccc........... and so on. Keep in mind though that there are goodies that fall out of the cut and dry signal range that are 'iffies', signals that are not easy to explain or describe. So yes there is some slight multi-toning going on with normal solid signals but I believe it is of nominal concern.
GL/HH
