[Dalin]

I roll in the open with beginner groups to model the system. Once everyone is comfortable, I end up rolling mostly behind the GM screen. I don't have a particular philosophical reason for this; it's just the way I learned to play back in the day.

I do tend to roll dice a lot, sometimes just to guide my thinking, sometimes as a nervous tic, sometimes to roll for secret perception rolls, wandering monsters, etc. Although I don't have an official fudging policy, I treat all hidden rolls as suggestions rather than iron-clad rolls. Typically, combat rolls and things like that are more fixed but if I don't like an entry on the wandering monster table, I don't hesitate to pick something else or roll again.