Rickair is right about networking on every flight you get on. I know a handful of people who went from new SAAB capts to the right seat at a major and were under qualified compared to many of the people in their interview and new hire classes. If the crew does not seem busy ask the latest company news, you might add you are pursuing a change to 121 in the near future and someone might ask if you have a resume handy.... at that point you have nothing to lose!