i brainstormed on how to do it here: one simple rig, and another one more elaborate with an extension so that height may be adjustable. while i was doing it, i realized i can substitute the speedrail + pipe clamp with a trombone for less sideways torque. any other/better ideas? everything would be secured with safety chain of course since it's hanging above a performer. the instrument will be a source 4 ellipsoidal with a zoom attachment.