I live in Tennessee and this was back in I think late 05 - early 06, I cannot recall exactly. The scene back then for Melee, here, was TINY.. getting that many people from the state (and a few from outside it) into one venue was a miracle in my eyes and the eyes of many there. That wasn't a local, either, I had to travel over two hours to attend. This was set up over an online forum I cannot even recall the name of anymore and Myspace, god how times have changed.
Now I can easily attend 'small' locals that have 150+ in attendance if it's for Ult (Melee scene here isn't kicking too strong anymore, but it's there) in 2019, but very small (50 or less) do still occur and in my experience, still tend to have pools for whatever reason. Not all, but most. Local TO's are an odd bunch sometimes.