Do you start calling tighter?

[rainmaker]

I did a fair amount of varsity ball in June, and what I saw was that, if they play rougher, you call more, but you don't move the line for what you would have called. Let's see, can I say that more clearly? You are still calling by advantage/disadvantage, but that means more calls, becuase they are playing "more aggressively". If they object, you say, "Well, you have really stepped up the defense and you're making too much contact." In otherwords, it's their problem.
You don't have to "crack down" if they are getting more physical, although you may need to be calling more fouls.