Longer or shorter arm first?

[divebrasil]

Hi Guys,
I just got my tray and arms set from http://www.i-divesite.com/. It took less than 4 days to get it all the way from Hong Kong.

Anyway. I ordered a 5" and a 7" arm. There is also the sea&sea connector.

It's kind of like this, but with an extra 5" arm and a clamp.

Should I use the longer arm next to the tray handle or next to the strobe?

Thanks

 

[mjh]

Assume you are shooting a PS. Since you can shoot everything from Macro to WA on one dive the main issue, IMHO, is that when you shoot macro you can get the strobe fairly close to the camera lens, but not positioned below the lens. You want the strobe parallel or a little above, in general.