[NIB]

I use the aqua skin bag like Tattoo said.
When I tell ya I have em all.It's no lie.It is still my favorite.
I used to just use a wire tie to make a loop an glue it with some zap so it don't tighten.Just poke it through the bottom of the bag on the bottom, back inside corner.A small piece of plastic pipe like water supply tubing will keep the zip from collapsing the bag.some bags have loops on the back for something u could just attach it to that.Another for a little loop on to that.then attach that to a clip on ur belt.U can make a small lanyard outa a old phone cord to give u a few more inches.If u get knocked down it could hang up on ya if Ur in the water.plus the bag fills with water if Ur deep an adds weight if Ur trying to get up on a rock.things to consider.It's is nice when Ur climbing around on rocks like jetty's.The weight of a bag swinging around can be just enough to knock u off balance.Another one of he plus's is when ur on a rock an get knocked off it's good u don't have ur bag flailing around.I wear the shoulder strap as long as possible I find this keeps it out of my way pretty good.