I have got two drills for cocking / hinging the wrists, but both appear to be slightly different to me, especially bearing in mind Gregs RH drill advice. Greg says the wrist should hing up. Is the following drill OK for this as it the wrists hinge upwards here (this is a PDF document, go to page 3 section 3 "Learn to hinge your wrists")

http://www.adrianfryergolf.com/html/...arntoplay2.pdf

I have also got this drill from David Blair, here I would say your wrists hinge from to the side.

http://www.golfinternationalmag.co.u...vid_blair1.htm

This little drill from Blair also reminds me of the Leadbetter classic pre set drill, however the Leadbetter version involves a full swing, rather than isolating the hand action.

Which one is correct or are they both the same?