If you're continually missing PR attempts off the floor, try using block pulls off 3-4 inch blocks. This will allow you to challenge your hip and back position at an angle that mimics where the bar will be right after you get it off the floor.
Experienced lifters should do these with a quick set-up and a rapid descent.
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Here's why natural lifters actually need more frequent workouts for optimal gains.
Everyone wants a muscular chest. So why are they doing heavy barbell bench presses? There's a better way.
With mechanical drop sets, instead of reducing the load, you switch to a new but similar exercise by changing the grip, angle, etc. The result is a whole lot of burning and a whole lot of growth.
Take it easier on your joints and blast through your sticking points with this technique. You'll wish you'd started doing it sooner.