Forrest,
Cog Hill #2 is a 21-hole course that is playerd with various routings. When using "Frank's" routing (named for Frank Jemsek the Owner of Cog Hill), 3 holes are skipped. When using the "Tournament" routing, 2 holes are skipped, leaving the players 200+ yards from the clubhouse with a cozy little par 3 as a 19th hole should they choose to play it. When playing the "Original" course, all of the new holes are skipped and the final par 3 just discussed is now, or was then, the 18th hole. And finally, there is the "19 - hole" routing which, as you might imagine, includes the par 3, 19th hole.
This particular course has one other unique element. There are two parallel (approximately same length) holes that are typically both in play as hole #4. If there is a backup on one of the tees you are to go to the other tee and play away. While this might look good on paper or to those who are already sick of waiting after 3 holes - it causes an absolute pace of play disaster on the subsequent holes. With two groups playing hole #4 almost simultaneously, for all intents and purposes, they will now have approximately the same "tee time" for holes number 5, 6, 7, etc. OUCH!
Now aren't you sorry you asked?
Bill