Crooked PD furrows:
What usually happens at a PD is that the furrow starts off straight and then one of a couple things happen....
1) It gets wider at the start then narrows...this is because people who need to make adjustments start and then pull out to make adjustments and get passed...every time they leave the furrow in the middle it gets wider (not that this is bad, it's a necessary evil, it just happens)
2) In hard spots people drive closer to the plowed furrow to keep moving forward without spinning out (take less of a cut).
3) When people choke up or raise the plow out of the ground it changes the width of cut for them and the guy behind them. My plow cuts/plows completely differently if I plow behind someone leaving a narrow, shallow furrow, vs. a wider deep furrow.
You can always do a nicer job of plowing if you follow in your own furrow, or one very similar to your own. Many times you will see guys let people pass them on the headlands, waiting for a better furrow to follow, or group up with friends that have plows of similar width, condition, etc. Thsi is not to say people are doing a bad job of plowing at the PD's....there's just a huge difference between an 8" and a 12" and for that matter a polished up 10" and a rusty 8" or 12".
Jim D. on the JD forum summed it up the best after one of the PD's.......paraphrasing...."Everyone gets a chance to go out, make their mark, and enjoy themselves".....
There are always a handfull who close up the ugly gaps in the middle while the others have moved on to the next land...and to be honest, in the past 9 years of PD's I have seen the quality of plowing go WAY UP!!!!!! I even had a few local farmers comment on our field after the last Roanoke PD...to the tune of "if they were big antique tractors they wouldn't have done any better of a job, those little machines are pretty impressive"..... Now what more can we ask for?!?!?!