If you're at the point where your low bodyfat percentage is making it hard to lose any more fat, I'd dare say that you probably shouldn't try, because generally once your bodyfat is that low, losing more of it decreases performance. Personally, while I don't know exactly what sport you're in and how bodyweight affects it, if it's a weight class sport I'd be more inclined to move up into the next weight class than to hold onto the current weight class and be in crappy shape for competing.
Anyway, if you must lose weight and a simple low-calorie diet isn't sufficing, I'd try carb-cycling, having some high-carb, moderate-carb and low-carb days throughout the week, scheduling the carb-loading based on training.