Something for ocean currents...

[tcjtn0]

I think you have the jist of it down.
Maybe I have to just get used to shooting photos with one hand.
When I am in a pool next, I may try to just try shooting photos with my right hand, and holding my left hand
at my side (Simulating holding onto a line, railing etc) to see how clumsy that would be. I guess that I could wrap my feet (legs) around the descent line for pics there.

And I agree with your point about taking picture away from the ship in a current. Would most definately have to be while on the ascent/descent line(s) -or- taken from a hand-hold on the ship.
I would not attempt any "free-floating" pictures. That is why I think that a static length of line (3-5 feet) would work, since I would always be shooting pics with a "hand-hold" right next to me.
Which is what made my first dive on the Spiegel so great...We ran down to 94 feet and did a horizontal swim for about 5 mins before curving up to 50-60 foot level. In this case, holding a camera would be a cinch with no current.
But as they say, you never know the current situation until you get down there!!!!
(Unless the current isn't current...That's bad!!!!)

Thanks...Jean ;D