I can see towards the end of your set using some momentum to get a couple more reps in (i'd rather have a spotter assist so you can maintain perfect form). I'm talking about a kid using 105 pound dumbbell on one arm rows, and literally using his whole body to get all of his reps in and letting the weight slam on the ground after each rep. I know they are trying to get stronger and better and I still love their effort though!