We don't have synonyms for hang ten yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are hang on, hang in and hangs ten.
(v) :
(surfing) To perform a stunt on a longboard in which a surfer moves to the front of the board and rides with ten toes extended out over the nose, after positioning the board so the back of it is covered and held in place by a wave.
(v) :
(surfing) To perform a stunt on a longboard in which a surfer moves to the front of the board and rides with ten toes extended out over the nose, after positioning the board so the back of it is covered and held in place by a wave.