Jeff Hammond is a great competitor, coach, and school owner straight from the Caique lineage! He has won tons of competitions and runs his own school in Texas, but more importantly, he's an awesome teacher with great techniques.
In part one of the series, he shows how to hit the Baratoplata from three different positions. This is a super strong submission that people don't take advantage of enough. This works extremely well when your opponent is defending your first submission as it leaves them open to this. He shows all the little details you need to implement this into your own game!