I dislike the oft repeated fudge advice. Why not just do a collaborative writing exercise if you don't want to actually use the rules of the game you're playing?
As a player, I would be crushed to find out the GM was fudging. It would make all of my decisions pointless.
As a GM, if you fudge, you are effectively removing the players' agency. You are becoming the sole arbiter of the story to be told, and they are just along for the ride.
If your spectators want that, cool. But I'd much rather be an active player.