I am playing in the South version. My club, the Clermont Chess Club, sends at least 3 teams every year. We're a bunch of hackers, but we have a half-joking reputation for "dominating the lower echelons". 😉 We usually have a team in classes B, C, and D, and we try to win the trophy in each one.
The South usually has between 25 and 30 teams, which is far far smaller than the US Amateur East, which has 280 teams +/-. I played in the East for 5 years back in the 1990's when I lived in Virginia, and it is a truly awesome tournament, and I highly recommend it.
Director at Large
Florida Chess Association
Clermont Chess Club