When the rider grabs the board whilst performing a trick. They will use their front hand to grab the board between the bindings on the heelside edge of the board.
Wakeboarding Glossary
Melan grab
Mobe
Where the rider performs a trick upside down (invert) and performs at least one rotation (360)
Mute grab
When the rider grabs the board with one hand whilst performing a trick. They will grab the board between the bindings on the toeside edge of the board with their front hand.