I mostly roll in the open, but I still fudge. If the party is really getting mauled the opponents will pick sub-optimal targets, or spellcasters will use sub-optimal spells. Sometimes I'll "forget" one or more of a foe's attacks on a full attack, etc.
But I generally roll the actual attack dice in the open. I'm actually thinking of not doing that any more because I'm sick of one of my players calculating the foe's attack bonus. Annoying.
But I generally roll the actual attack dice in the open. I'm actually thinking of not doing that any more because I'm sick of one of my players calculating the foe's attack bonus. Annoying.