Make the switch from one side to the other quickly so that your opponent cannot shrimp out. There are two variations for this technique, one for beginners and a fancier, more advanced technique.
Grappling | BJJ | Jiu Jitsu
This technique will help you transition to the other side in side control when your opponent is starting to get to "squirrelly". Start by getting to north-south, then move onto the other side.
Grappling | BJJ | Jiu Jitsu | Grapple Buddy