When I started in theater, (20 years ago, at age 12) it was doing musicals, so quick scene changes were the name of the game. We experimented with
periaktoi (we didn't know they were called
periaktoi, just "three-sided thingies) in two forms - three-sided and two-sided. The three-sided ones were difficult to
line up, so we tore them apart and made "cigarette boxes" that were 2' x 4' x 8' tall on casters. We were able to attach plywood faces to them from behind in preparation for the scene change, so the only thing we had to do was spin them and/or move them to their marks, and they fit snuggly together side by side.
At some
point, we needed a couple scenes with Broadway style flats hinged together, so we ordered furniture grade lumber and
canvas. But we didn't know much more than that, and they work OK, but the
canvas was never stretched right.
Both sets of scenery are still in use.
Another group I was at, doing Guys and Dolls. For the missionary scene, we had three "strings" of 4 Broadway flats made up with
luan, (and a plexi glass window) trying to piece them together during a scene change was insane, as we had to support them while trying to stick pins into the hinges. In the dark.
When I grew up, and became TD of another group, we only do static-scene shows. The closest we come to multiple scene shows is Christmas Carol, where we have an "office" scene, a "
house" scene and in front of the curtain is any "street" scene. The previous TD had built most of all the Hollywood flats we use, and the basic footprint hasn't changed significantly in 10 years. Most flats are 4' x 8' so I just swap them around to put a door in here, a window there. Sometimes I've had to tear down only one side of the back wall to put in stairs, but then by the next show I put it all back together again.
Because of their modularity, I voted for Hollywood.