"However, if you look at the photo of 18 in Geoff's book there isn't much in the way of penal rough. Do you think the intent of being off the center lines was to tempt shots at those greens complexes or to force pitch outs to the fairways? Would Oakmont play better with rough that allowed you to advance the ball to the green at less then preferred angles?"
Geoffrey:
You make an interesting and important point there about the photo of Oakmont's 18th in GeoffShac's book.
The fact that in almost all cases in old photos and old aerials "rough" areas appeared to be much shorter and lighter (less penal) than it often is these days is a subject that has been brought up on here over the years a number of times. It's a subject I'm extremely interesting in as are some such as Matt Shaeffer of Merion. As far as I can tell noone has come up with a totally accurate reason why that may have been the case back then.
My belief, as I think Matt Shaeffer's is, is that that kind of thing back then (much shorter rough areas) was really not much a "design intent" thing or necessarily a strategic consideration but basically one of the exigencies of maintenance (mowing equipment) back then.
The fact is that to mow those rough areas back then maintenance had to take those tractor pulled big wide roller blade gang mowers out in those areas and to do that those areas necessarily had to be quite a bit shorter than now.
I've lived on farms all my life and I've been mowing grass and fields all my life and the fact is if rough or rough grass was as thick and long back then as it can get now there was basically no way at all those big tractor pulled gang roller blade mowers could get through it. The rpms would basically just get constantly pulled down to a stall because those roller mowers basically just didn't have much latitude on raising the cut height. The flail or rotary mower that is much better in higher and thicker grass was a thing of the future.
So that was apparently an unavoidable fact of life and maintenance back then and probably the sole reason for lower roughs in the old days.
But to answer your question on the ideal rough height to have today on a course like Oakmont, I think it is probably about the way they maintain that course generally. You can find your ball and take a shot at a green if you're good enough and strong enough and probably pull it off with certainly less stick than from the fairway.
What the USGA is going to do with the rough at Oakmont for the US Open though is simply what the USGA frequently does with rough at Opens. It's going to be penal and not many competitors will be gunning long shots at greens because of that.
Wayne and I went through there last summer and just for the hell of it the club had 2-3 holes set up with Open height rough just so the membership could see what Open setup rough is like.
When we played the course maintenance had just cut it back down though on those 2-3 holes because apparently the membership had had enough of it---it was basically ball eating stuff.
So like you, I'd personally like to see it shorter than it probably will be for the Open but it wouldn't surprise me at all if a guy like W.C. Fownes would have totally approved of Open height rough there because he did design and desire a strategically "center directed" golf course and he also was the guy who coigned the phrase "a shot missed should be a stroke lost forever".
And also, Geoffrey, as I'm sure you know, almost all the old golf courses, including Oakmont, back then had fairways which were generally around 50-55 yards wide. Those who really study the subject think that too was probably more a function of the maintenance equipment of that day (those big old tractor pulled roller gang mowers again) than actual strategic design intent of the architect.
I think all the old aerial photos of all the courses of that era will prove that no golf course back then had fairways which were generally the 35 yard width most are today. Back in that day they were almost all about 15-25 yards wider than now, and probably 20-30 yards wider than US Open setups.