I'm an ultra-rapid cycler, too. I can have a brief mixed episode that lasts a couple hours. I usually take some Xanax or Bee Pollen and it will help shorten it. When I'm hypomanic, I only notice it in short bursts and the rest of time I feel normal. With depression, it can last a couple hours or a couple days, but I don't feel the anguish of depression all day every day. I guess my medication makes the feelings less intense and gives me more of a "normal" feeling in between brief episodes.

BP 2, OCD, GAD
Lithium, Trileptal, Latuda, Risperdal, Xanax