I believe in riding early in the morning. The pathologicals are less likely to be out and about and those who *are* tend to be sporty types (runners, bikers,etc)
I also had a weird experience once which dissolved when I took out my cell phone. Which was quite funny (afterwards) because he drove off b4 the SO answered my call
What really upsets me is young men who harrass me. Because I think "I could be your Mother". Also men who will deliberately stop for a pee.