When I search plowed fields, pastureland or rangeland, my personal preferences in 'Beach' mode, then I go to 'Field' mode on occasion or if there are too many Iron nails or other wire-iron such as cut fencing. If the amount of trash gets too annoying, I opt for the 'Park' mode, but prefer the two 2-Tone modes to the 3-Tone 'Park' mode.
I have all three of my Discriminate modes set at '0' to accept ALL targets, ferrous and non-ferrous And due to my hearting impairment I like the 'Beach' mode's audio a bit better because it has a more solid or consistent audio because it is NOT a VCO-enhanced audio. The 'Field' mode is a VCO-enhanced audio which is fine, but I prefer the NON VCO audio response. The only thing I don't like is that when Iron Nails start to get too abundant, or too frequent, then I switch to the 'Field' mode where I can make use of the Iron Audio Volume to reports the Iron with the lower-loudness level.
For many decades now, I also enjoy seeking out and hunting older-use places that hd most activity from about the 1840's through the Depression Era, and quite often that means isolating locations where there once was a homestead, church, school, dance hall, stage stop or other potential site associated with fields, pastures, and other wide-open land, and the Simplex + makes a very handy, light-weight modls for covering those types of open areas.
Monte