Remember that the RDL is different than a conventional deadlift. It's all about placing tension on the hamstrings and disengaging the quads. So remember these two cues:
1 – Keep the hips high.
First slightly bend the knees. For the RDL, the knees should be "soft" and not totally straight. Now bend down or hinge, but keep those hips high.
2 – Push the bar towards the ground.
Use this cue during the lowering phase of the lift. Don't just let gravity pull the bar down; actively push it there, then push your hips forward and squeeze the glutes. This will help you to keep your hamstrings tense throughout the lift.
The Biggest RDL Mistake
Too much knee-bend. This will make the RDL less effective by causing your hamstrings to lose tension.
Mike used to like Functional Training. He used to think Mike Mentzer was kind of a bonehead. Now he's not so sure about the former or the latter, along with a whole lot of other things. If his current rate of "unlearning" continues, he soon won't know anything!
Regardless of the profession in question, your "rep" (reputation) is usually what gets you where you want to go. In the world of physique and performance enhancement, building your rep is equally important, except that we're talking about an altogether different type of "rep" here.