Points well taken... I did consider a few different designs when hanging my 3 units. Had I hung them perpendicular to the length of the tank, I certainly would have used one piece of bar stock for both the front and back rails, utliziing all 6 mounting points with each rail. However, I ultimately wanted to hang them parallel with the tank, and using a one bar along the front would have covered the buttons on the front of the units. The bar along the back of my 3 units is one solid piece, and utilizes all 6 mounting points. The bars along the front are, of course, two separate pieces which utlizes 4 mounting points, including the points where the hanging kit is attached.
Additionally, by hanging the units parallel, there is less gap between the units themselves (6 inches from unit to unit), which I felt would lend to less deflection in the setup then hanging them perpendicular. Naturally, this might not work for all tank dimensions and users with varying numbers of radion units.
I've also considered countersinking the surface which contacts the units (at the mounting points), in order to allow the bar stock to lie flush with the entire unit, instead of 'resting' on the mouning points. Once I got the unit put together, I checked for deflection and there is none, so I decided to leave it as is for the time being (or maybe I'm just lazy, LOL). Perhaps I will countersink the rails at some point, but at this point I have no deflection...
At any rate, the feedback is much appreciated :beer:. Below is another pic prior to paint: