Lil38:
Not all that scary??? Maybe, if you know you won't be lost at sea...
That was my point. If the boat takes off without you and there are others nearby, take any boat you can get.
The "not my boat" mindset is very dangerous. If you can't find your boat, any boat you can get to is your boat.
Like any other incident or equipment failure, being left behind is an unsettling experience, especially when you start to realize how much you were not taught in OW class.
The SSI OW book, for example has exactly one page titled "Signaling Devices", only gives a single paragraph describing the existance of SMBs, contains no instructions on how to deploy it, and makes no mention that the most common need for emergency signalling, is to attract attention when your boat isn't there.
I wasn't saying getting left behind is pleasant or insignificant, I was only saying that if it happens in a popular area with other boats around, you should be able to get somebody's attention and get a ride.
Any time you're in the open water, you need the ability to make yourself as big, bright, buoyant and noisy as possible
Forgive me here, one would tend to think that you are a brave soul or quite possibly unconcerned for fellow divers.
I'm neither. I was only saying that having your boat take off in a busy area isn't as scary as having your boat take off when there's nobody around.
In any event, be prepared, whatever it takes. Since I was left, I started carrying 2 9' SMBs (orange and yellow), a Scubalert (tank-powered air horn), and a strobe.
I haven't been diving in any remote areas, but if I did, I'd probably bring an EPIRB (Electronic Position Indicating Radio Beacon).
The biggest thing to remember about boat diving is that there is a (very small) possibility that when you return, there will be no boat, and you need to be prepared.
Terry