1) Aerobatic maneuver 
The tailslide is an aerobatic maneuver that starts from level flight with a 1/4 loop up into a straight vertical climb (at full power) until the aircraft loses momentum. When the aircraft`s speed reaches 0 and it stops climbing, the pilot maintains the aircraft in a stand-still position as long as possible (this is greatly helped by thrust vector....
(from the article `surfing`) ...riders to move their craft freely around the wave and have transformed surfing into a gymnastic dance. Today the wave is the apparatus upon which ...
sliding the underside of the tail end of a board on a ledge or lip.
sliding the underside of the tail end of a board on a ledge or lip
The backward and downward movement of an aeroplane which has been stalled after too steep a climb.
to slide on a box or other surface only on the tail of the board.
A slide on modules with the board at 90° on the tail.