Kaiser -
Saw that as well -

Saw the large fireball followed by the thick black smoke from maybe 4 miles away. Immediately picked up the gear and made the run to the site - must have gotten there just after you - there was 5 or so sport boats there when we arrived and heard on the radio that the "sailor" had been picked up. Thank god for concern anglers!

Also left prior to the Coast guard showing up. Not much left to do but stare and wait for it to sink.

Makes one think about having fire extinguishers and FFDs close at hand. Pretty scary stuff and sure didn't seem take long for the boat to be completely engulfed in flames. According to the radio sounded like a tug to the north may have been the first to call it in to the USCG but as you said a number of private sport boats were first on site.

Tight lines
Curt