You don’t need to have a specific rule. Just say don’t call it unless you’re sure. Minimize flags. Lame PI calls are the worst flags in football and it kills the game.
You don’t need to look further than watching that AFC championship game between the Jags and Pats.
Absolutely no reason to call those and it severely impacted the game .
And by severely, I mean it probably was the difference in the game.
Let the players decide it, not a ticky tack call 50 yards down the field