Yep I used the bungee from one your talking about to connect to my camelpac....Yup, bungee all the way.
I got a "knock-off" swingy thingy for my ETRac from Kco for bout $20.
It ain't as purdy, but it works.
My detector now literally floats. I just guide it. 8hr hunts are painless. Cept fer the ole' back of course...
GL
Peace ✌