Basically, "kiiking" = swinging so that you perform a 360 around the swing:
Before you assume that just vigorously swinging like an insane school kid will get you over the top, Laansalu says that you’d better be in top physical form if you want to be competitive, citing footballers, rowers, and roller-skaters (because Estonia is delightful) as prime candidates for the sport. It takes a lot of arm and leg strength, as well as solid technique to master the perfect timing of when to stand, when to sit, and when to thrust to complete a 360...
