This is the VXN at the hourly. My VXN channels were a success... so far. You cannot trade the VXN normally. However, you can use the VXN to figure out when the NQ pulls back. When the VXN approaches a major support (bottom 2 green lines), that is the time to exit QQQ/TQQQ.
The VXN acts like the VIX. It rises either due to traders ordering too many calls/longs at a lightning rate or when the NQ is about to pullback.
This is how you can maximize your awareness of holding onto TQQQ/QQQ/FNGU and when to exit.