best thing to do is not watch that "monsters inside me" show on discovery
seriously, 2 weeks in the freezer kills those things. cooking kills them too. filleting and cutting the belly portion out helps to clean it up. some worms start in the gut and start spreading soon as they notice that the host is dead. so gutting after you catch 'em reduces the chance that you'll see those buggers and keep 'em away from the flesh.
/bing