Here's what I use...
BD Injury and Treatment Prevention - Product Information
It is strapped on your arm or leg with velcro AND that little "pressure strap thingy" I attach to the lanyard to with a very small lightweight carabiner. I use a heavier stainless carabiner to atach to the downline. A good pull of the arm or leg will easily release you from the lanyard in an emergency.
I don't like to be attached or tied to anything I can't get untied from really quickly if I'm underwater!
Good luck and be safe!
