It wasn't my intention at all, it's just that in the past I've pointed things out and sometimes people get upset when I bring it to light because there's always a tendency for people to then lean on the cheap/exploitable stuff. I'd write up tons of stuff to help everyone out, but I know that some will take issue with it so when I do help people I do it through private means.
So I guess I should just come out and say it because it's what I feel should have done from the get go. Ballhawk is completely overpowered when used right at the snap. Ball is snapped, immediately hold Y, profit. Watch as receivers don't separate, as soon as the receiver is targeted every defender releases from their assignment, doesn't matter if they're facing the target, they cut off and head to the target. Everyone has spidey sense.
It doesn't matter who you're controlling, you can be a safety, cb, lb, maybe even a dt/de for all I know, but if you're holding Y from the get go everyone gets ballhawk. Every defender flows to the ball better, or chases in zone, as long as you sit there holding the Y button like a complete scrub.
Put your defenders in zones, hook zones, hold Y and watch as defenders flow to receivers. In some cases you don't even need two deep coverage, put your safeties in hooks, hold Y like a complete scrub from the snap of the ball, and watch what happens.
We all have trouble stopping out routes in 2 man under with inside tech, which we should, but if you hold ballhawk the angle the CB takes is much better. Right at release of the ball the CB adjusts his angle immediately and takes a great angle to the ball.
In summation, hold Y, become a top defense.