Last weekend I was talking to diving relatives about current and deploying safety sausages if someone gets caught in current during a dive (several of us are going to Fiji in June). In theory it sounds simple enough - squirt air in to safety sausage, let line out of attached reel, slowly ascend doing safety stop. However, in an open water column, when you start inflating the safety sausage, doesn't it change your buoyancy? Is the trick to release air from your BC to fill the safety sausage (no net change in buoyancy), then as you release the SMB to the surface, add air back in to your BC to regain neutral buoyancy? Or is there some other way to do this in practice? Am I missing something or trying to overthink the process? Up until we talked about this, I always assumed inflating the safety sausage was the same whether on the surface or underwater, but now I'm not sure