Sean
Your example of the 6th at Deal is very interesting and also ties into Kyle's idea of the effect of experience on the "line of instinct."
When you stand on the tee at the sixth you can see the players on the green and they don't look too far away. It looks like the green is reachable, but what is down that right hand side over the hill that you can't see? What is the penalty if you hit it long but a bit right? Since you don't know these facts, your "line of instinct" shifts to hitting it short left, which is in fact the (a?) "line of charm."
This is how I played the hole in my recent two rounds there, when we played into a 1-2 club wind. Now, into the wind, the 2nd shot is not that difficult from that short left ladning area if you can get some metal on the ball with a lob wedge, but I still wonder.....
....what really is it like to the right of the green? Are the chances of finding yourself in a reasonably good lie with a little pitch to the green good enough to make the original line of instinct the right one, particularly downwind, where as you imply, pitching and holding the green from 30-90 yards requires a world-class short game?
Maybe, after you play the hole many times you just know that in a certain wind, bombing straight at the green is the line of both instinct and charm? Maybe somebody like Noel who has played the course many times can chip in (as it were) here?
One of the guys I played with in my recent two rounds was a reasonably long player (2HCP) and a very experienced hand at Deal (regular Halford Hewiit player). He didn't even think of going for the green on either day. I wished I'd asked him what he might have done down wind.
As a corollary, the 1st at Brora is very similar to the 6th at Deal, design wise. I know that hole very well and have played it 30-40 times, in all sorts of winds. I've only tried to drive it a few times, and successfully only once, fairly recently (in the last 3-4 years). On that occasion, I just "knew" that it was the right play, i.e. my line of instinct and the line of charm were one. Without my considerable experience of the hole, however, I doubt if I could have found that out.