Interesting results. The Whites Bulls-eye II has a 36 kHz operating frequency. The Garrett has a 12 kHz operating frequency. I am not sure what the old original operated at. I am having trouble understanding why the mass of the slider object should matter at all. The greater the mass the farther away from the tip of the pinpointer it would have to be to achive the effect. I would think the conductivity of the slider object, and target in relationship to the frequency being used would be the determining factor in distance.

I.E., Bury a copper penny at 4 inches. Then bury a very small brass or copper washer at 1 inch. Most detectors will see them as the same target in both motion, and all metal mode, and at the same depth (4 inches)

Thanks for posting your results! I will definitely have to play around with this.

Jack