Locked Grooves are good if you are an extremely talented Dj with confidence to drop it in and slam another tunes in (very quickly) its coo to break the set up, but it has to be done properly otherwise your ****ed basically...i am not talented enough to drop in a locked groove or to use 3 decks...so i just leave it to the talented ****ers....the one thing i could do with a locked groove is sample it and use it in production (not sure if im supposed to admit that but hey thats just techno for ya.... )