Interesting video. I'm not an electrician and wasn't aware of the electronic ballasting and the newer T5 tubes. Turns out the 48" fixture that I bought is a T5 inside and mentions no hum on the box, so I assume it's electronic. I'm not happy with the arrangement as is primarly for room lighting which is less then 8' x 10' along with a seperate wall mounted CFL on the other side. A drop ceiling isn't in my budget and I'm using an old, unrestored utility room of the house.
I looked through an older copy of Contact East's calalog which is now Jensen. They used to be a lot more plant/production oriented before the merger and have many different manufacturers from about 12 years ago. Without exception, every station, from every manufacturer they show uses either a 48" or 72" fixture with two T8 bulbs inside. That's a lot more light then the one I purchased with a single bulb.
I never thought of drilling a hole in the sides of 24" shelf brackets once I found the right spot and then run a bolt through into the fixture sides and have the fixture between them. That would allow for a swiveling. Or maybe taking a look at commercial assemblies from some of these companies that still exist and see what their arm/light combinations are. While they won't fit the dual track I have, they can be mounted on the shelf arms which are available from 6"-24" lengths. The next smallest in the series: 21.5", 16", 14.5",11.75",8" for a variety of shelf sizes. The lighting is once set and forget, so a permanent option might be just as good.
Regarding my 25" deep surface. That number is deceptive now. I'm used to working on 30 and 34" depths, but equipment along the rear taking up valuable bench space. That's less of a factor now with nothing across the rear is deeper in thickness besides my Rigol scope. The service monitor has been moved to the very corner with one of those wire shelves at 30" high supporting the rear off the side of the bench and the 40A power supply has a remote head that the unit itself sits on the lower rung of that shelf. I also have a large scope cart for spectrum analyzer keeping it off the bench. I've tried flopping the monitor and spectrum analyzer around and the monitor works better on the bench with it's tail supported off the side. I'm rethinking the 16" shelving in favor of 12" deep shelves. Most of what I have now will fit on a 12" except my Kiethely counter which is 16". I can set that on top of the service monitor. My older equipment such as the analog scope which is a HP1707 can stay on the old bench if needed along with some older equipment that I've either replaced with smaller or don't use much anymore, but still need to have around. This bench is more an upgrade and the entire right side is devoted to rework. I have to make the best of the space I have as I barely have 5 feet to work in and that's hampered by two carts and maybe even a roll around,upright bin holder soon.