Have used the 3 month subscription before as well, but for the last couple of years we have straight cut with SF2 on the combines. So a 6 month subscription works better for us. I don't think anyone would be real happy with SF1 on a combine once they have tried SF2. Set it at 29.5ft on a 30ft head. Looks like it will miss when cutting but it never does,all fall.

Also seed with 2 drills the same width, quite often in the same field. Once one of the drills has a good A+heading,we radio the LAT,Long + heading over to the other tractor. Then they are both on the same line. Therefore you can't "shift" with two tractors. And we don't need to with SF2.