[quote name='RamesuThe1']Maybe by a mili-second or so...almost perfect timing on each. Line him up on the edge and guess when the snap is coming....if you start too early its offside...if you start too late you miss.[/QUOTE]
Okay, well just be careful about it. We banned boosting on blocking extra points back in October - which basically entailed shifting guys pre-snap or getting a running start. I know it was glitched at the time, I forget if they ever patched it. If they did, I guess the ban wouldn't be necessary, I'm not sure though, maybe someone else knows.
Anyway, as long as the player isn't shifted before the snap it's fine.