K.I.S.S. approach to back workouts.
1) DL's ..starting from around the knee area. Need a PR, boxes, platforms, etc for this one.
If into BB'ing, really no need to start DL's from the floor. If into PL'ing, than starting from the floor is a must. Some guy's are just not designed for doing this exercise, but taking the weight from around knee height reduces the excess strain on the lower back and the knee's (for the most part) are out of the way from the actual bar's path.
2) BB Hi-pull. This is the power version, where the bar is taken of the PR, boxes, etc, etc.. Bar positioned from around the the knees/lower quads.
Cleans are ranked up their with Hi-pulls, but I find too many guy's have trouble learning this simple movement...and injuries happen. Keeping it within the class of K.I.S.S...only suggesting the Hi-pulls. If wanting to experiment with cleans, that will be up to you. Both exercises are worth the time and effort. Cleans will require a bit more flexibility, quickness and timing, which sits well with athlete and guys generally into sports. You shouild be ably to improve you game, whatever that may be.
Though DL's and Hi-pulls are considered power/strength movements. they both can be applied to BB'ing quite well. Don't have to use massive weight in either movement, for BB'ing moderate works well for most. Might suggest 3X7-10 for each exercise. Both can give depth and thickness to the whole of the back. As well as influencing the delts/traps strongly.
As far as back/lat width is concern, that most certainly can be improved. But if you frame is of the average or narrower structure, those exceptional wider lats is not going to happen. Just a quality that some are born with, a wide body frame (as they say in football & basketball). Some outstanding Pro's have overcome poor genetic structures to develop exceptional total back development.
Good Luck
