My most usual way to hunt with the Vaq is supertuned with the thresh at 3:00.
Don't care about using the pinpoint, everything sounds great to me and the disc works well in everything from iron to top end.
In the days I used to play around more I did experiment some in areas and I went over spots not supertuned with no signals and a few with some faint breaking iffy signals and then by supertuning the dead spots all of a sudden had signals and the areas with the iffy signals those signals became louder and solid.
This was all done in extremely bad soil in Birmingham where depth was pitiful and even getting up to and past 5" was a dream in most of the really bad dirt.
Here in Kansas I have never experimented like this so in my now much better dirt results could be different, but when I do hunt with the Vaq here it is usually supertuned because that is just normal for me at this point and I find great stuff at depths from shallow to fairly deep.
Next time I am out with that thing I will mess around and see if good soil vs. bad soil makes a difference.