Snow plows get those nails pretty fast.
Other tactics seen here:
1. Make large, neat stencils. Most frequently course arrows are the paint objection. There are certain parts of town I do this in now in self defense. If the town has approved the race, this need should have been mentioned in the City Council meeting.
2. Someone else here does a Word document with labeled pictures of all splits. I started doing that and now have fewer calls early Saturdays.
3. Sometimes there is no place to hide like when Bob Thurston got the $600 bill from the National Park Service for graffiti removal.
Oscar