Sharpshooter using railgun can one-shot scrakes from any distance (minimal risk that someone rage it). Please don't set a scrake on fire that is not yet raged. Hard to land head shots on a scrake that a firebug set on fire. Please don't engage in melee combat with a scrake that is not yet raged.
Hard to land head shots on a scrake that a berserker engage in melee combat. Please don't attack scrakes that are not yet raged unless you know that you can kill it where it stand. The longer you wait with decapitating the scrake the higher are the odds that someone rage it (which make it much harder to hit the head).