I'm finding the best way to get around CO's idiotic EUA lottery is to book flights on NW.

So far this year, I'm 5 for 8 upgrading on CO segments (2 at the airport), which includes a 6:45 stint in Y EWR-SJC.

On NW, I'm 8 for 8, ALL EUA. On my last trip, I companion upgraded my wife on a reward ticket even.

I don't get an email from NW, but then again I've stopped getting emails from CO, too.

WMH