Here's what I say to my buddy about "releasing" my weights: "Hey, buddy, here's the deal. There will NEVER be an occasion when I will want you, myself, or anyone else to dump my weights. I have no interest in being made artificially positively buoyant at depth and risking an uncontrolled ascent that may cause DCS or other problems. I have placed the correct amount of weight in the proper locations on my rig to optimize my trim and buoyancy, and I prefer to keep it that way. Please do not ever attempt to remove any weight from me when we are underwater, and I will provide you this same courtesy because I value your life as much as my own. Thanks."