Playing drum with a heel-up technique can sometimes make drummers feel unbalanced. However, there are a few things that can be done to feel balanced even when playing heel-up. Firstly, it is important to have a proper seat height and angle. Relaxing the legs and sitting straight can also help maintain balance. Placing the heel slightly to the side of the foot pedal can provide stability, while using the ball of the foot to control the pedal can improve control and balance. Regular practice and experimentation can also help achieve a comfortable and balanced position.