After watching the full video, hard to watch, I know it's hindsight, but at some point I think they should have gotten jackets on, then ultimately baled.  Would have been rough for a few minutes out in those waves, but to me, jackets or not, looks like they were almost trapped in that thing before it went down.  Not much the Belle could have done to help when they were all still in the Duck.  Prayers to all.