I attended a Club Corp annual Christmas party years ago. None other than Robert Dedman Sr, who should know something about running a golf course, claimed that not having returning nines cost a course 3500 rounds a year.
I guess he should have made changes to his flagship course, Pinehurst No. 2, which doesn't return to the clubhouse at the 9th. That must have cost him a lot of money. /s
Well, its easy to be pithy and diss one of the more important guys in the history of at least US golf on the internet. As to Pinehurst, I don't have first hand knowledge, but have heard from some inside there that part of their decision to buy was to have a famous flagship among the mid level clubs CCA was able to bring to golfers. But I am just as sure they knew the financials before they bought it, and thought they were good, and that CCA management would make them even better. So, yes, we can use P2 as a nice example of why par 72 doesn't matter. All courses compete economically and some have the benefits of oceans, tournament fame, or what have you, making par irrelevant.
The work we did for CCA was preliminary routings for development courses. There, one of the main goals was being a convenient place for members to play after work, so the nine hole return made all the sense in the world. And, those were typically cornfields, or at least gently rolling sites. If they had a great valley or lake, chances are the routing was purposely avoiding those to leave that land as high $ home sites.
OT a bit, but we have worked with a land planner who prefers the clubhouse to be in a valley with a built (landscaped) view for the CH, again, leaving the prominent hill for real estate sales. I am quite sure he did the math, too. For 3-5 million dollar home sites, you can landscape the opening holes or range pretty nicely and still come out ahead.
So, as hard as it is to say on this site, not all courses make greatness their no. 1 goal, nor do all sites support it. And when certain conditions like that are prevalent, at least starting with the idea of returning nines is smart.
I have designed a few of each type of course in question, and easily came to the same conclusions. At Cowboys, there was no way to return the nines so we didn't. At Wild Wing, fitting 4 courses and a suitably large range around one clubhouse was pretty problematic, even though the site was flat, and few go to Myrtle to play 9 (unless is the second round of the day, maybe) Easy call for me, although mine was the only one of the 4 courses not to return.
IMHO, Peter has it right - its always a case by case review and decision, like anything else in design. Sean is also right - what is the USGA other than a codification tool? We all play by the same rules, and we are trying to compare scores often using their handicap system. Someone must think that comparison is fairer when all most courses are 72? I don't know, just wondering how it all came to be.
Lastly, I think that in general, we are against those who just presume 72 is the only way to go. I have worked with a business consultant who always recommends par 72 and 7000 yards. He says they do better fiancially, but when I press for statistical proof, he really has none and falls back on the "everybody knows" from the 70's or 80's argument. To his credit, he has backed off when analyzing the finances. If I ask, "Will spending $125K on a new green, and $35K on a new tee pay off in new revenues just because it is now par 72? Even at today's low debt rates, changing that green and tee to go to par 72, it still needs to be able to specifically generate $13K per year in revenues to cover that debt, i.e., 130-260 more rounds at an upscale public, or an increase of at least $0.50 per existing round, or some combo of both. Hard to predict that, but sometimes, if you are doing major renovations for other reason, adding that amount to the remodel probably doesn't hurt things.
In most cases, spending less beats spending more. Maybe moving a tee pays off, but going by the numbers at that course often deters bigger renovations. That, IMHO is the test to decide whether to change an existing course, not some handicapping or design theory, LOL.