I was in the area of his golf course near Aberdeen earlier this year. I also noticed a lot of the farmers collect the farm dung and move it, probably to a centerlized place to be processed.
my idea was to pay some of these drivers to leave a few mounds of the shit next to the signs directing you from the freeway to the golf course. And then maybe a drop a few more in strategic areas so that the smell finds its way to the course.