If you do not have room for bungee cords you can also make a setup using a setup like a shower curtain rod. The flex tubing will act like an accordian if you use enough hangers.
The advantage is won't get as much droop which might block light from adjacent lights.

I run my light cooling system, charcoal filter and room exhaust fans all on the same line. During the summer I vent to attic, during cold days in winter I vent to interior rooms and save on heating bill. I heard about one guy who used ducted heat from lamps to help heat his swimming pool.