Lighting advice? Do you mount them or hang them?

[mark]

Screwed some phenolic strips to the lights (for thermal break) then the strips onto my canopy.

[e46er]

i hung mine much easier to remove canopy

canopy is 8 inches high on front and sides and just used a 2x4 across the back so the light is a 1/2" higher than the 2x4 so the canopy slides right out the front

[SeaHorse_Fanatic]

It is a MH with built-in ballasts. Much heavier than Coralife Aqualight Pros.

[fraggalrock]

And it weighs 43 pounds...How can I do this so I can work in my tank and have it look good? any input is appreciated )