If you're looking for a complete game from the guard then you have to check this video out. There's no doubt the Rubber Guard is an effective way to work from the FG but having an alternative guard game is a good idea. The more options you have the more dangerous your guard will be.
This video put out by Jersey Shore Brazilian Jiu Jitsu starts out by showing the difference between the low guard and the high guard. Then they go into a number of control positions from the FG. Some are defensive and some offer both offense and defense.
After this they go through a whole series of techniques starting from what is close the the Pyramid from the 10th Planet system and ending with a number of Triangle setups including some Gift Wraps.
