This team was using it to blow air in the bottom of their WSM. Have seen them use it more than once. I don't know why they just don't use a Guru or Stoker, but I watched them plug in blow dryer and hold it at the bottom of the WSM for several mins. 2-3 times during the cook.
22.5 WSM x2
'There are two pains in life. There is the pain of discipline and the pain of disappointment. If you can handle the pain of discipline, then you'll never have to deal with the pain of disappointment,'- Nick Saban