I've been hearing that international delivery pilots are leaving their life rafts at home, because of the Hazmat expense incured in getting the raft back after delivering the plane to its desination. In some cases, I've also heard, the cost of shipping the raft home is almost as expensive as the raft itself. I wonder if it's possible to remove the CO2 bottle and flares, and leave them behind to solve the problem. Then the pilot could bring the raft home as checked baggage. Of course it's much easier to remove the CO2 from a life vest, but I wonder how it could be done with a raft.