Lighting advice? Do you mount them or hang them?

[fraggalrock]

I just got my 90 gallon tank with the canopy and picked
up a great light m/h 48 long at a great price,but it is so
heavy and I am unsure of how to mount it or what to do
any advice or examples is most welcome. I love the look
of the canopy and want to keep it and removed the back
off of it for cooling reasons but I still have not decided
on how to do this.btw it is heavy because the ballast are
built in.is there a way to do this where it looks good?
There is a pic of my tank under sherrys 90 gallon build
on the tank journal
thanks sherry