I still dive IDs. And I have two isolation manifolded sets as well. For my BM IDs I have a custom set of bands for 6.9 inch tanks (aluminum 50s, steel 72s, Faber 84s) that places them closer together than a standard isolation manifolded set. Back mounted IDs are managed in exactly the same way that side mount IDs are handled. BM IDs handle better in the water than some slung systems and are not banging and clanging about when climbing a boat ladder or beach entry and require no special handling or complex slings and bungees. Put them on and go. I use either a horsecollar BC or I choose my small Dive Rite doubles wing. I drive either BC from the left tank.