Polite is nice. Shy isn’t. You want to screen for people who are out-going and aren’t going to hide in the van.
Look for people who have skillz™. Like Intern Gabby at KZIA who could play sax and rap.
There is NOTHING wrong with giving them street names and little profiles on the website. If anything, it adds some character to stations.
Grill them for what’s happening in college. I heard about Beer Pong a full year before mainstream society courtesy of a promo kid in Rochester, NY. Kind of like…