The back 3.5 is among the rarest of the floor tumbling elements given its extreme difficulty (only attempted by the most comfortable twisters) and the tendency to bounce out of the landing and render the skill not worth its value, just a tenth higher than the far-more-attainable triple full.
The 3.5, however, remains a favorite of some of the more risk-loving Chinese gymnasts, who will solve the problem of the inevitable landing bounce by connecting a front pike out of it and only falling some of the time.
Currently performed by
Mao Yi (CHN)
Shang Chunsong (CHN)