How much overlap do you get on your contoured ends just from hitting the end at an angle with a 15-20' toolbar?

I know you've mentioned what the seed savings are with row clutches but it would obviously be less with a narrower toolbar.



Regardless 20% over is a lot and I would be having a talk with the owner of the pumping business, that's unacceptable.   


For those who think its money in the bank how would you feel about the coop spreading 20% too much fertilizer on 80% of your acres and nothing on the other 20% ?