Damselfish:
As far as the tank bangers they tend to be in the way of plopping your tank/gear setup in some tanks racks on boats, and if you have to move them from tank to tank it's a nuisance, just one more thing.
Yep & yep. But if you're moving your BC & reg, it just becomes part
of the drill. And even if you forget, fairly easy to fix. And I've seen it stretched
by the tank rack, but not actually in the way. Maybe I haven't seen all
the styles of boat tank racks, I guess I'd give it up if I were on a boat
where it just didn't work.
Damselfish:
And they seem to break pretty easily.
I've been wondering about that. Still waiting to see my first broken one.
I'm sure it will happen. Fin and mask straps break, too, and we still
use them.
Damselfish:
But if if they work out for you, cool. I sort of liked the idea once but just found it not to be practical. (For some people it is the noise though, most folks like quiet underwater unless it's really necessary.)
That's what I was looking for, some insight about safety (as Vtdiver2 said),
or ecological damage (littering the reef with scuzballs), or interfering with
other divers' experience of the dive. With all you experienced folk dumping
on them, I thought I might be overlooking some reason to not use them
that outweighs their practicality to me, and if so, I want to understand that.
As I said in my OP, there's enough talk here about rattles and horns (and pig
sticker pommels on tanks) that I don't see the noise polution angle. And it's
not like I'm using it continuously, or for that matter, close enough to other
pairs of divers for them to hear it. I still have an open mind on the noise,
but remain unconvinced.
I don't really care about looking dorky or different, but I do care about
safety, the environment, and the rights of others, and I'm very aware that
there's plenty about diving and equipment I don't know. This board seems
like a place to improve that. Teach me.