The present invention includes methods of conducting a colonoscopy that includes positioning a ball pillow under the patient's left lateral lower abdomen while the patient is lying laterally until cecum is reached by the colonoscope. Also, the present invention includes methods of limiting looping of a colonscope during a colonoscopy that include positioning a ball pillow underneath a patient and/or applying a pressure to a patient's abdomen by securing a ball pillow between a patient and a surface.