also, kroc rows should be higher reps, taken from 5/3/1:
This is one of the best ways to build back and lat strength. Kroc Rows - high reps 20-40 with the heaviest dumbbell you can handle - are my favorite variation. These are humbling when you first try them, but your grip and back strength will quickly increase. Start off with 1-2 warm-up sets of 10 reps, then go all out and see what you can do.