I use this foot for 4 years now with my own structure (6 m) but when I make more tonight I'm a bridge of 10 m and frankly that's enough. I recently shot two in the room (at the bottom together) and I put on 2 BY 4 ramps, 4 lyres Futurelight PHS 200, effects and feet 3 m. It was (normal is ASD).
Photos of www.plaudio.be (evening of March 10)