My favorite subject! (Marcelo's game)
Once Marcelo gets side control, he likes to establish position with crossface and underhook control. He doesn't worry about controlling the hips as much as the upper body- and he doesnt care about isolating the near arm (that's usually around your waist- like so many people try to do)
After he gets the position, he actually advocates giving the opponent some room to move- that's where he is at his best- when people are transitioning and trying to escape.
When he passes to his left side- he likes to attack with knee on belly if the opponent is protecting themselves and not giving too much of an opening- which oftentimes exposes his opponent to the far side armbar.
He also likes to transition to north south position and then to the other side- where he will set up his North South Choke- he only likes to do the choke on that side.
** Realize that his type of "transitional" bjj requires a good deal of skill, timing, and conditioning. Thus, depending on your conditioning, skill level (compared to your opponent), etc, you might be better off using more pressure (like the videos posted in this thread), and slowing down your opponent and "cooking" them to open up submissions.