Ok, as I've said, I have a few seadoo's now and I have always wondered one thing about them. I have always worried when I leave my machine unattended because I dont want it stolen. I always take my "key" with me, but what stops someone else who owns a jetski to just plug their key in and drive off? Are these keys specific to each machine? I have a 96 and an older one that doesnt even need this key. What else can I do to try to secure it more?? Are these keys only for that one machine??