Well, ya know... On thinking about this, there is another way to go with this detuning stuff. Say you've got your bow tuned to shoot broadheads perfectly, but it won't shoot field points to the same point of aim.However, you really, really want your field points to hit right with your broadheads. That way you won't be forced to change your sight settings when switching from broadheads to field points.

So, you detune the bow from shooting your broadheads perfectly to make them shoot to the same point of impact you get with field points. It's not perfectly tuned for either, but maybe good enough to suit your needs.

That would be detuning for the sake of convenience.