yeah it's really like.. 45 minutes of how it began and how crazy simple it was in the beginning, then 60 minutes of violence and wars and crazy bitches then 15 minutes of how miami is today. it's really good though. go see it!
and if you like this movie, be on the look out for another doc called Excellent Cadavers:
http://www.filmforum.org/films/cadavers.html
it's the real stories of the Sicilian mafia wars and trials that were going on throughout the 80s and 90s. It's in the same vein of really unbelievable stuff and it's also very very good (but probably a bit harder to see at the moment).
but yeah... see cocaine cowboys.