When you use your Bankai's special attack, if keep shaking the Wiimote and Nunchuk. The special attack can continue up to three times.

After using a special attack, keep shaking the Wiimote to increase the damage and hits. For Ikkaku's Bankai, the dragon charge meter will get full. Because Byakuya has two special attacks, this trick only works for Shuukei Hakuteiken, decreasing the cast time from five to two seconds.