Just this past Tybee, one sailor tried to hang onto a righting line as the boat began to accelerate and the line pulled him underwater and eventually he had to let go. It only takes one gulp of water to drown. No way, no how, am I wearing a tether. I WILL carry a line with me that I can use for various purposes (like throwing over a sideways boat to the crew who might be hanging upside down on some rigging) but I really believe that a tether is more of a liability than not having one.