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Take a piece 5'16" bungee (the white stuff from West Marine since it has more stretch than the black dive stuff has) and make a small loop out of it. Maybe about 3" diameter or so. Put this around the tank valve before putting the regulator on. then clip the top bolt snap into the bungee with the opening pointing away from the tank. All set!
This will keep the bolt snap tight to the valve and thus hold your tank up tighter to your body. The bungee works much like the Dive Rite choker system but allows the bolt snap to be pulled away from the valve to make clipping and unclipping much easier.
For me, the valve would be facing the wrong way.Using a choker on the bolt snap is definitely the way to go.View attachment 509214