A click is probably a different measurement depending on the speed of the player. The better the player, the more clicks there will be on one side of the OB. I believe what he's trying to say is line up the shot and assess your position. If you can mentally make the ball from that position, pull the trigger. If not, move over a click.
A click could be a slight 1/4-1/2 tip movement inward or outward. A slight shoulder / hip pivot could accomplish that so your eye/cue alignment remain intact. Once you make the "click" adjustment, reassess and repeat if necessary. I think you should never have to make more than a 1-click adjustment when you're over the shot, based on this system. If you find yourself "clicking your way to where you need to be" --- you're not coming into the shot correctly.
When I first shot with fractions, I tried to look at each half of an OB as 8 pieces. Each piece could be considered a click, if you would. When I was playing well, I would step into the proper click. On the thinner cuts, I might have to click-out to correct my perception. What I found was that BHE was the best way to make minute click adjustments for the in-between shots as opposed to seeing small slivers of an OB.
I think for someone looking beyond ghostball, clicks or fractions are a good transition. It will two-dimensionalize your aiming, which I think is REALLY important. Over time, you'll progress beyond that to removing the perception of click/fraction/slice-sizes and sight to definitive points such as the OB center and OB edge for everything. Doing so removes variation...as variation prevents progression.
Sorry to go off on a tangent - - but eliminating that variation is what makes a rock-solid pre-shot routine... and that's what gets ya there. Nothing else matters. Finally, eventually your ball-pocketing system (whatever that might be) becomes your pre-shot routine and that's all there is.
Sorry, I hope this makes sense... I'm finishing off some Jacobs Creek Shiraz.
