Have thought about Greenseeker but haven't done it yet. I am not aware of anyone using it around me, have seen several presentations by university staff and dealers. My son a recent grad. from K State is dragging me slowly into the 21st Century. This is my first year with the EZ-Pilot and 750 monitor. Just used a light bar before. Very nice to be able to actually turn around a check on the sprayer once in a while. As far a protein, not fertilizing for above normal levels with HRW I am just trying to increase yields and hold a good average protein level 12-13 percent in this area.