Try gliding your camera across a dinner table between place settings with a top mounted camera. Or set up a ground level shot when your lens is nine inches above the floor. Post heads are rarely used on low budget productions because they're usually large, heavy and very expensive. The Underslinger replicates footage produced with a post head but works with any conventional fluid head. The camera is supported from its handle rather than the base plate.
All camera moves including tilts and pans are as easy to execute as in standard overslung mode.