Had a chance to spend a day with Mick Doran last week, currently caddy of E. Pepperell. Having caddied for Molinari, Rocca, Westwood, Rose, Howell, D Clarke , Bjorn, Brendan Steele, he knows a thing or two...
I asked him about Bethpage Black and he told me some players cannot win there, and he would advise them to just skip it. No point going. Obviously the Tour pressure, points, ranking and sponsors do not allow a top 100 player to skip a Major if he is not injured. So they go.
As someone pointed out before, the leaderboard at Pebble Beach should be very different.
I also asked him what could be done to remedy slow play. He said the fields were way too large. 80-100 players should be the max, and always make the slow players play last. I suggested enforcing the watch, fines etc...he thinks it's not doable.
I believe the pace of certain players hampers the chances of some others. So if you are teeing off late behind the very slow, your chances diminish, as if the set-up of the course doesn't suit you.