Gold here. Lots of success on short- to medium-hauls, and on a flight to HNL; long-hauls have been no-gos. (Except one transcon where an amazing dude asked me to switch with him from the Y exit row so he could sit with his friend -- what do we call that, a friend-up?)

If y'all have a spare moment, consider tracking your upgrade success at diditclear.com

If the reports on DidItClear are representative, Silver and Gold rates look similar (~30%), as do Plats and 1K's (~60%). To me, this suggests flights are trimodal in terms of F availability, which would make sense to me.