By either being a better Thai Boxer - or failing that taking the fight to an environment that he doesn't function well in, e.g. the ground. But that means you MUST have a GOOD understanding of how MT works - not a theoretical "web surfing" or "video watching" understanding but an understanding that comes from practical experience. Find a good MT club, train for a couple of years, have a few fights, spar with them using non MT tools - get in the kitchen! Do!