Perfect vs. Good Enough.

Deadlifts
3-3-3-3-3

"What this boils down to is that there are exactly three criteria for a correct starting position for the deadlift:

1) The back must be locked in extension.
2) The bar must be touching the shins, with the feet flat on the floor.
3) The shoulders must be out in front of the bar so that the shoulder blades are directly above the bar.

It doesn’t matter what the individual looks like in this position as long as these three criteria are satisfied. Legs may be long or short, the back may belong or short relative to the legs, arms may be long or short, a kyphosis may be present, and these factors will all influence the appearance of the starting position, primarily in terms of varying the angle the back makes with the floor. But as long as all three of the criteria are satisfied, the starting position is correct."

-Coach Mark Rippetoe

followed by:

21-15-9

Walking Lunges (L+R=1)
Thigh Touches (L+R=1)

AND....if that is not enough...racing cars on route 38 is!...

"Now, I’ve always been of the mindset that “perfect” form, whether it’s in a power clean, chucking a football, throwing a punch, or swinging a baseball bat, is a relative thing. Each one of us is put together differently, and we each have our our biomechanical advantages, disadvantages, and idiosyncrasies to contend with. But just as lacking perfect throwing mechanics didn’t stop Brett Favre from reaching greatness, just because I can’t pull-off a text book power clean does not mean that I still don’t derive a hellacious benefit from working the movement. Sure, I don’t allow myself to get sloppy, nor would I allow anyone I train to do so; within a certain “flaw window”, though, I’ll let things slide. How wide is that “window”? Well, like just about everything else in the Strength & Conditioning world, it depends.

Strive for perfection, work your ass off with good enough, and pull the plug when your form deteriorates into (1) unsafe and/or (2) non-productive."

Some sage advice from Keith Norris of the the Theory to Practice blog.