I agree about setting up indoor stages. Depending on the bays, things get awfully cramped, awfully fast, and you have to worry about pass-throughs hitting equipment or no-shoots, or the ceilings, or the floors, or the walls....
I have set up for our weekly indoor IDPA matches several times, and I don't think more than one or two of my stage designs survived contact with the enemy (the enemy being the bay geometry).