NILIF was very helpful with Newlie when he started feeling his oats. It made the point that I was the one in charge and that all good things came from me without undue harshness. No tool is good for every dog, however.
I guess I've always thought about NLIF in my own way. Mine have pretty free rein, but they have to deserve it. They don't have to jump through any hoops, but they have consequences if they don't behave as they know they need to.