I tend to prefer blackmail fantasies to physically overpowering a victim (though the occasional bitch-slap to get her attention works, too), so "fighting" isn't really in my fantasies much ... unless I'm doing a kidnapping-and-enslavement scenario. But then, even in THOSE if she gets a chance to fight it seems to me that indicates a lack of professionalism on the part of the kidnapper.
RESISTANCE, on the other hand, is always welcome. If she doesn't resist, why would I bother to punish her?