as an example here is what Mike Robertson had to say about RP's "Many will tell you, "Just grip and rip!" While it's good advice for some hardcore meatheads, it's bad advice for the rest of us. Trying to yank the bar off the floor allows the hips to shoot up too quickly in relation to the torso. The hips shoot up, the bar drifts in front of the body, and you end up in a horrible position to finish the lift.
After you take the slack out, ease the bar off the pins (or floor), and finish by driving the hips forward at the top. Do your best to keep your chest up and back flat throughout"
what i have trouble with is pulling the slack out of the bar soooo this should prbably help reinforce pulling smoothly as well as proper tech. and not drain the CNS as much.