I hanging kits that come with them all and a hook?
I think hanging is u-g-l-y..
I took some aluminum angle and just made a mount kit so mine sits on top of the open canopy.. Just 4 pieces and some rivets and done.. Essentially a pocket that they fit into
Sorry don't have pics and don't have it setup anymore.. But I'm doing the same with my ATI t5 fixture too as I don't like the look of hanging lights..
Many use "shelf brackets" sticking out from the wall or aluminum extrusion or conduit or pvc pipe or whatever you've got..
Google images search for this "aquarium light hanging bracket" gives you TONS of pictures to look at for inspiration..