A Kicktail is where the skateboard deck bends upward behind the Tail or Nose. The kicktail acts as a lever and is vital for maneuverability. Freestyle decks typically have two styles of kicktail, Single Kick and Double Kick. In the early days of skateboarding, the kicktail was only at the tail end, but now Double Kick decks (with a kicktail on the nose and tail) are far more common.
You can browse Double Kick or Single Kick Freestyle Decks below: