This is a very good hanging system, there are sliders that allow you to adjust the position of the light and allows you to lift your light for tank maintenance.
Yes its made by Coralife for Coralife fixtures, but that doesnt mean you can't do a little bit of engineering and make it work for your application.
I actually have it on my Hamilton fixture and it works great.
Plus it only costs like $25, which is nothing in this hobby.
http://www.oceanicsystems.com/produc...n-hardware.php