Heard an interesting snippit from one of my diving colleagues. He, like myself, tends to use a Wing most times these days. On a dive trip to Galapagos he was having more difficulties than he had experienced before in strong currents. He found that his Wing was tending to deploy like a "sail" and caused much increased work and air consumption. I've not found this to any large degree myself, but, got to wondering if any of you other folks had similar experiences.