Since there not much on hunting PP/AM mode and thats just about all I do, here is a resent email I sent out on settings
I have no set settings, I start at vol...3/4 threshold as low as possible but still can hear the disruption of the threshold if I get a deepee, sensitivity set at 12 o'clock...then once I hit the beach and get a faint signal in AM, I do the fine tuning. Most of the time I end up adjusting the vol..up more, and the sens..up a bit more also. Backing of the target and walk up to it checking different sweep speeds, seeing which works best........................... If I use the amp, which I do most of the time {it is a doc's treasure amp, and all it does is amp up the signals that you can hear and the signals that are so faint you can't} I do the same, find the faint target and do the routine. I use this methold from the very edge of the wet sand out to about knee deep, after that it does not works as well.