You pretty much need to know when high voltage is coming and slap it about half a second before. By the time your eyes register the cast bar, its too late (connection dependent of course). In my opinion though your PLD should be the one silencing with the BRD. You lose way to much DPS using that silence rotation. If they are really set on making DPS silence, have the group invest in silence potions and go in order. But this would get real complicated once you start having to deal with people remembering Rot and what person is on silence.
