Managed to find a photo to sort of describe the problem with the hose looping:
http://www.hvsac.co.uk/files/hose.jpg
Before anyone comments:
(i) Yes i know the harness is too low and the tank - its adjusted for my drysuit not t-shirt!
(ii) The surroundings are a little odd(!)
Basically though you can see the loop where it goes from the first stage down and towards the pocket, its actually a bit worse than that diving, when the hose is tight to my chest that back loop is even bigger which doesnt strike me as overly neat and non-snag.
So, anyone got any suggestions or is it just normal (am i too short!?)