Sort of relevant: I've played Spyglass a few times. As a 7 index it is one of he toughest courses I've ever seen.
The last time was a fund-raiser and everyone played from the white tees. Spyglass is just over 6100 yards for the white tees, which we were playing.
I was getting my butt kicked. Rough was long and wet. Greens were lightning. And pins were brutal.
On one hole I looked back, and seemingly 100 yards behind me were the 'Pro' tees..the tips.
All I could think was, 'Holy cow, Phil shot 62 on this golf course under tougher conditions from there : )