Hold the R button for the following tricks: 

Z-Nac Nac 
Down Z-No hands no feet 
Right/Left Z-No hands 
Up Z-Side prone 
A-Can Can 
Down A-Recliner 
Right/Left A-Cliffhanger 
UP A-Scorpion 
B-One foot Can Can 
Down B-Surfer 
Right/Left B-Super Mac 
C-Down-Rodeo 
Down C-Down-Suran wrap 
Up C-Down-Toe clip 
C-Left-Fender grab 
Up C-Left-Backflip