Hey Silver Fox
Where I hunt the ground does not change much. I just toggle into all-metal every so often, do the coil bobing check and it is allways spot on.
I set my ground balance at a neutral setting, meaning the threshold does not waver as I am bobing the coil up and down (8" to 1") from the ground.
My favorite Tesoros are the older ones like the original Bandido, Toltec ll, Inca, and Pantera. The older analog detectors run quieter in the iron rubbish found at
late 1800's farm houses, old camps, picnic grounds....etc. The newest Tesoro that I own is a 2001 Tiger Shark, a buddy of mine has a Vaquero and likes it, and
he uses it in same areas as I do.
Randy