[Jeff Brimble]

If you look at the back of most upright hoovers you will see a hook/toggle for the elec cord., copy 2 of them  and fit one on your trolley/backpack. (Made mine out of two bits of wood)
You still have to wrap it on- I suggest fig of 8 pattern to prevent twisting, but just flip one of the the toggles thro 180 degrees and offf comes all the hose.
If its fitted right on a bpac you just un coil it by lifting off a loop while wearing it. If I have too much I just hang a few loops over a pencil kept in my top overall pocket, until I take the pac off and re coil it neatly back on.