I have to chime in here and add the following thoughts
Clearly good wishes to my little brother of the ocean. Glad you are unscathed
A big dive flag is always your best friend, I know stephen had one but I still think it is your best defender
I applaud his restraint, Stephen for no yelling or chastising the guy, he messed up and should have been told as much.
I have a storm whistle on my floatline where it meets my gun, so basically at my hand, at the 100' range I would have given a few blasts and maybe waved my gun, I think that would give me at least 5 seconds to suck, duck & dive. Might have gotten someone's attention. Of a good captain hears a distress call and cannot Id the source he should, should power down to be safe
I agree with Dan's original post too, especially dropping the gun, a prop will suck up a tangled rope FAST and you will be in a lot of trouble. Drop everything when you bail
Be safe friends