I agree with the rest on the light, it will not work.
On the "offending" photog I do have a question, who was finding the cool spots??
IMO there are several different situations that come into play. When carrying a camera I dive away from everyone else - my spotter buddy and me or semi solo. If I/we have just located a great subject you can bet I am going to get all the shots of it I want and it will include several strobe angles and most likely a lens change. I/we located it and as far as I am concerned it's my subject until I am done. Things change a lot if it was another diver or a DM that found it. If a single diver found it, it's his until he is done.....same rules apply to me when another finds it, it's his until he is done. I wait in the background - cutting in line or rooting in will not go well at all. If a common (group) DM finds it, then it's "ours" so a couple of quick shots and I move. Hogging a communal subject is bad form but so is butting in on a subject that was found by a single diver/dive team..
On the "offending" photog I do have a question, who was finding the cool spots??
IMO there are several different situations that come into play. When carrying a camera I dive away from everyone else - my spotter buddy and me or semi solo. If I/we have just located a great subject you can bet I am going to get all the shots of it I want and it will include several strobe angles and most likely a lens change. I/we located it and as far as I am concerned it's my subject until I am done. Things change a lot if it was another diver or a DM that found it. If a single diver found it, it's his until he is done.....same rules apply to me when another finds it, it's his until he is done. I wait in the background - cutting in line or rooting in will not go well at all. If a common (group) DM finds it, then it's "ours" so a couple of quick shots and I move. Hogging a communal subject is bad form but so is butting in on a subject that was found by a single diver/dive team..