OPI on quick "screen"

[Kirby]

Originally Posted by RazorRef

I agree also with that mechanic, yet I am still trying to get used to it. In the league that I work, quick screens are used a lot. It's hard to throw that flag when you know it's probably going to be picked up. With 7 man, the mechanic that is best used is to have the LJ (who's holding the LOS) to throw is arm back when the pass is behind the LOS. I've become very accustomed to looking at my LJ on all screen plays.

Given your wings use the arm back mechanic for a pass completed behind the LOS, what mechanic do they use for a backward pass?