Question about Radion lights

[Oilers]

I have recently upgraded my T5 lights to Radion lights. The lights are amazing, however, I do have a couple questions about them. This is how I hang them.
http://s217.photobucket.com/albums/c...ent=radion.jpg
It's about 11-12" off the water. Is that a good height? What would be an ideal height for it? The bracket I used is fully adjustable.
Also, I have downloaded a couple profiles off the net and programmed them into the lights. Thanks subman How do I know which profile is running? Is there any way to switch from one profile to another without connecting them to a computer?
I guess that's more than a couple questions Thanks all for your responses.