Quote: (Originally Posted by
Fiona)

What in 20 - 30m viz, surely the light wouldn't penetrate the light conditions.
Not trying to be obstructive just trying to work out what is practical, I am off to the Redsea soon and won't be taking a canister light.
Depends on how deep you are.
But, essentially, if there is a point where you don't know where your team mates are, then you are not in the correct formation. If you swim single file along the wall where you don't have light communication, you better be danged sure that the person in the rear can get to the person in front of them quickly. It's up to the person in front to be responsible for the person behind them; It's not up to the person behind to be "able to reach" the person in front.
Good conditions aren't really a good reason for poor team skills.
Just my thoughts.
Chris