2nd one is much better. I think it would be easiest to draw the clock relative to the teepad, but that only works on a straight flat shot.
I was thinking about the whole hammering thing yesterday a lot. I think it might be a good exercise to take a hammer, and just hammer into a post. You would be able to feel all the bracing, and also where you get the best leverage to hit the post with the hammer. In a real throw, things should be very similar, if not identicle (I haven't tested this exercise yet), except just imagine someone moved the post at the last second right before you made impact. Imagine the hammer has like a 3' rope attached around your wrist, and by missing the post, the hammer flies forward out of your hand. As the hammer is flying forward and the rope gets taught, your shoulders would catch and then tug the hammer to the side by rotating your torso and shoulders -- Now with this added force, the rope breaks, and the hammer goes flying 9999mph towards the target.
With a disc, instead of the hammer flying out of your hand, you get the palm ejection and disc pivot (the rope is already taught), now you pull sideways on the disc as it's rotating forward out of your hand to get the extra fling.