Well the one next to tiger is what could be at best described as 'demonstration' boxing (and a snake show etc).. The same guys spar each other every night etc.. Dont get me wrong, I dont want to jump in the ring with them but its not sanctioned fights. Also this ring kind of got knocked down for the new building there and has moved back towards the seafood resurants.
Currently Phuket region has the Phuket town stadium and Patong (next to the Bowling on Sai Nam Yen) stadium that are licenced to hold accredited fights. Apparently any place can only have 2 nights a week and there cant be more than one place at the same night in any province..