PfcAJ
Contributor
I put one of mine over the fuel hose (which is actually pretty important underwater, btw. Gives you something to handle the tank with), and the other is under the lower strap flush on the tank. They don't come off the tank unless I want them to, and I do a LOT of stage switching in my diving. Having one rubberband over the rigging makes restowing the hose a lot quicker. Mine are also about half the width of yours, which makes stowing the reg easier.