Wow great video!
Sorry to hear about the boat, but glad to see you had a great time anyway.
I just came back from a 8 day trip sailing central and south and we had no luck with the oceanic mantas at Magic Mountain too. I don't really understand the hype on that one, but maybe it's one of those where when it's good it's really really good sites.
I'm surprised to see the visibility was so murky in Oct too - was around the same or worst when I went at end of Dec - I wonder if it's always like that or if there's a month when it's better.