If you don't have a can light, you can just tuck the loop of hose down your waist strap.
...or you can get a can light
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If you don't have a can light, you can just tuck the loop of hose down your waist strap.
Hose routing - With colored hoses and everything to avoid the whole black on black photo problems.
I love my bungied backup -- it has saved my butt more than once, since I have a tendency to fall down getting in and out of the water, especially in that nasty Southern California water that MOVES (shudder . . . ).
To the OP -- if the concept intrigues you, you can always begin with a 5' hose (unless you are a very barrel-chested person). This routes under the arm, across the front of the chest, around the back of the neck and to your mouth. It's a setup less likely to end up with hose caught on the rail of a boat, or entangled in something, than a 7' hose tucked into a waistband. It also works with a traditional BC, where it can be a little more difficult to stow the extra if you have a lot of real estate used up with BC on the sides and front of you. I don't think you have to have specific training from anybody to use a 5' hose -- I have helped beginner friends move into that configuration, and they've had no issues.
Blue Sparkle - unfortunately my backup is completely yellow so your suggestion won't work with my current setup. But, I'm looking into a new setup which I intend to purchase this spring so I should be able do as you suggest then. Thanks for the input.