Ted,  I saw that same BTO doing the same thing on their 20" beans last year, I just figured they didn't have enough GPS accuracy to come back on the rows with the sprayer, I assumer they are just running SF2 or SF1.  When they spray across the rows they can use either signal and just hit the button.  They are plating a bunch of canning crops and some wheat this year up by me.  It's weird, they rent 240 across the road from some of ours and they came out and planted about 20 acres of field corn and then 20 acres of beans later, with a 12 row planter!!!  Then they planted the rest to sweet corn this week I was told.  I wonder what's going on with that?