My apologies to Jeff. I have seen him recommend 4200 yard tees here so often, I assumed that his link would be more of the same. Instead it turns out it was reasoning similar to mine about USGA values for scratch and bogey players, although not explicitly laying at least a portion of their scratch/bogey tables.
Jeff of course added PGA Tour driving of 295 yards to his comments beyond the 250 yard scratch and 200 yard bogey stats and also mentioned the women's stats. He decided to use 60% of PGA Tour yardage for the lower bound on the women's yardage!?!?
Jeff wrote, "The course measures 7,207 yards, 6,772 yards, 6,147 yards and 5,324 yards (!?!?) for forward tees. The first three yardages are popular yardages for the 290-, 255- and 225-yard drivers, which are typical distances by low-, mid- and higher-handicappers." If he were using a true proportional adjustment his tees shorter than 7207 should be 6337, 5592,
and 4722. If you allow his 255 yard drivers to be essentially the same as the USGA scratch golfers, then they should be playing the 6337 yardage, and using the USGA proportion of 60% for bogey women golfers vs scratch men golfers, you get bogey women golfers needing tees at 3802. If you use the true driving distance difference (70%) measured in the USGA study then your bogey women golfers need tees at 3549.
Clearly someone needs to do something about the poorly regulated equipment that has led to the vast differences in how far different types of individual are able to propel the ball.
Or, you can adopt the Olympia Fields model of trying to one up Medinah by building four golf courses instead of three. But, the four golf courses are for 1) 290 yard drivers, 2) 255 yard drivers, 3) 225 yard drivers, and 4) 180-200 yard drivers.
Each course has two sets of tees. One set for the men, and one set for the analogously talented women that suit each course.
If you have followed my writings on this website, then perhaps you are wondering what happened to they guy that has constantly argued against vast numbers of tee boxes on golf courses. Well, that guy has been going through this exercise to demonstrate the futility of trying to satisfy all golfers all the time to enable them all to have chances for birdies and eagles. I.e., the futility of chasing medal play as the model for golf going forward.
The match play model is more robust. No matter how long the hole is you can have a enjoyable match without dwelling on pars, birdies, and eagles. Besides having a course that makes you think strategically about attacking the hole, you have an opponent that is also making you think strategically about how to contend with how they are playing the hole.
Not sure what you are apologizing for, but hey, I'll take it!
BTW, I actually read my link, and it turns out that article was a two parter, with the second part describing some of the steps to implement the theory on a real course.
As to the different math versions, among proponents, it can get quite heated some of the differences. I once hosted a panel on the subject, and thought it might get really hostile....instead of the mildly hostile I was luckily able to hold it to.
And my math is slightly different from others. I use the 90-80-70-60 model from the Pro tee length, whereas others start from the men's tee, others the mid men's, tee, etc. I do that because I've learned (in real estate courses) that you need to lay out from the back tee to keep others from poaching your much needed property. I am also a shameless rounder......As you will see in the second part, when retrofitting and existing course, it doesn't really matter. You start with your math, but then you adjust to put the other tees on at least minor high points, considering any forced carries on either shot, etc., so they move anyway. Using the rounding, I just know that if I have to move a tee a bit, it should usually go forward a bit from the mathematical location. And, it usually moves somehow.
I didn't consider the Slope Guide scratch and bogey differences. In the 90's the USGA did a driving distance study, from which I derived % of golfers who hit each length (and then, of course, shamelessly rounded to the nearest ten yards, LOL) I also used Broadie's chart on a and d players from his 2009 opus, and compared all to the more recent USGA/RA distance studies of average golfers. In essence, I'm not sure handicap applies to the system, just the best guess as to average tee shots of broadly grouped golfers.
Those groups tend to fall in 30 yard chunks (but again, with some rounding) and sometimes the question is which end of the range do you design for? I tend to consider the lower end on any carry hazards, and the longer end where a hazard might pinch or cross slightly behind the LZ, and average length when considering lateral hazards in the LZ. That seems to allow the most players to play the tee shot as intended.
I actually find the idea of "play the course as you find it" to be a bit arrogant. I see the designer's job to fit the design to the expected players (at least of the muni courses I typically design) rather than design some great artwork that may not consider them, and tell them "so what." Few businesses are successful when ignoring their customers in any field! So, I have no trouble providing 5 or even 6 tees. Many clubs do seem to balk at 6, and some at 5, and if so, I go with the flow a bit more, figuring they know more about their player culture over many years than I know after one site visit.....