The EZ steer unit is not the issue with my tricycle Spray-Coupe. I was running 15 -16 MPH and guidance seemed to be no different than at 12 MPH. Coupe may rarely wander up to 8 inches off the line but it is because of seeded furrows being at a slightly different angle than what I'm spraying. Vast majority of the time, the EZ can keep the outfit within 2 inches of where the GPS says it should be. That is much, much better than I'm able to drive. When I get to the headlands where I'm going cross-furrow, the tendency of the coupe; to want to stay in the same groove is taken out of the equation and guidance comes immediately dead on line.

I think Ernie is the guy with an EZ mounted in his pickup sprayer. He's cheating a bit since I'm sure his outfit has power steering - unlike my Coupe.