One provisio.

Never dress as the cable guy, unless you are the cable guy.

NOTHING is more guaranteed to get you noticed - first from the deadbeats who haven't paid and think you are there to turn off their TV; second from the people with problems and just know you are there to fix them, even though they never called; and third from the people who want free cable.

Learned this one from experience. Had notes left on my windshield, people sitting in the back of my pickup waiting on me.