Now some folks try and use 4TF,,,but it is not set up right either IMO.
Minelab made a mistake here,,,they should have made ferrous line adjustable while using 2TF,,,if they would have,,,a big plus.
CTX,,I beleive a user has the flexibility to do.
Forgot to say,,,folks who love where dirt is milder like in Midwest can get away with using 2TF more,,and not leave good targets in the ground.
My area,,2TF is a no no.