Hey Chuck,
I have problems using the pinpoint mode too. I have over 230 hours of experience with the XS1, but I have never been successful with pinpointing in pinpointing mode. So I always have to approximate the target's position while I am not in pinpoint mode by putting target signal in the forward 1/3 of the area of my 10.5" search coil. First, I swing the search coil around with little 5 or 6 inch sweeps until I think the strongest signal comes thru the headphones. Then, while doing the short, slightly quick swings, I slowly move backwards until I quit hearing the signal. Then I slowly move forwards until I begin to hear the signal pretty good. At that instant, I figure that the target is somewhere in the forward 1/3 of the area under my 10.5 inch search coil. I imagine 3 lines radiating out from the center of the coil, each at 120 degrees from each other, just like cutting a pie into three equal pieces. Then I try and place the signal in the forward piece of pie.
This method may not work for rusty nails that give of false coin signals. Sometimes a rusty nail will give off a beautifully warbling apparent coin signal. This signal may be positioned 5 or 6 inches away from the actual rusty nail. This causes you to dig down and find nothing. But when you dig over about 5 inches, you find the nail.
There are many people who use the pinpoint mode with no problems and can pinpoint to within a 2inch x 2inch area. I am not so good at it!
You need to get the Sunray X1 target probe too.
Mike