Actually, I find that any method that reduces my personal work load ends up with better success than methods that are labor intensive. If a method requires me to actively evaluate my fish daily so that I can trap them, I end up missing the minor cues and fail completely. If I can set up the situation where most fish will survive without my intervention, I have relatively good success. I am not sure if it is because I am so lazy that I miss the minor cues or if the method itself just works better. I am a farmer at heart and like systems that I can manage using simple techniques. It is easier to spray for bugs when the first hint of an infestation comes up than to try to control them using the methods that require a perfect analysis of the potential impact of the bugs on your crop, and similar simplicity works for me in breeding large numbers of different livebearers. I breed individual fish species in over 20 tanks at any one time and just can't afford to track each tank to trap females at the optimum moment. By setting up survival situations, I get as many fry as other methods but seldom miss a critical timing and lose my whole fry "crop". It is a personal prejudice, in addition to the simplicity, that has me avoid the breeding traps, although I am the first to admit that they can be used effectively if you devote the time needed for their use.