So you guys went from "Bull." and "Liar" to "it's not sustainable"?
Now we are getting somewhere.

Question wasn't "should you?" it was "can you?". And we are talking about people having second jobs. How the heck is THAT more sustainable, than just working a few extra days at your first job?
I'm sure it's different for commuters who drop trips for max days off, but how much is stalling your career because of that worth for you?

Like havick206 said. Fly your a** off, get your time, and get out.