Rather than a T-Track counterweight fly system where the weights are perpendicular to the wall, a lattice track (usually used for the fire curtain if full-height flyspace and sometimes for the main rag) has the weights parallel and just a short distance away from the back of the proscenium wall.
View attachment 8303
http://www.jrclancy.com/latticetrackarbors.asp
View attachment 8303
http://www.jrclancy.com/latticetrackarbors.asp