They make them all wear the same clothes as much as possible so they can edit and make things look seamless.
If there's one thing that bothers me about the show, it's the stupid editing designed to make things more exciting. I constantly notice a shot that doesn't make sense. They obviously insert other footage from other times in order to spice up the narrative.
Like, half the time Troy is yelling "shooit! shooit!" is canned footage that has nothing to do with the current gator fight.
I'd like the show better without all that "reality tv" garbage. The subject matter is interesting enough on its own without some heavy-handed production.