Hey there, are you talking about Columbia or Columbus? I live about 30 mins from Columbia and ride all the time. I know very little about the actual city, and haven't heard of any wakeboarders near there. If anyone does wakeboard there and sees this, please let me know, I'm always looking for more riders!
Columbus, MS is a different animal altogether. There are a good number of riders from that area and a nice river runs through there. I'm about 3.5 hours from Columbus.