Bill McBride:
How nice of you to think about me. I love the Bonita Bay Club, which now has 5 golf courses. Arthur Hills designed the original 18 holes, which did feature back to back par 3 on one 9. They were #7 and #8 on the old configuration that was at one time part of Golf Digest's TOP 100 in America.
The 2nd course went across the street and is called Creekside, so they had to come up with a name for the first course and called it Marsh.
The move to three courses came by extending each of the Marsh nines out for more holes, so you now have two 18s that don't return at the turn.
Old #7 and old #8 are now #16 and #17 on the Marsh course. The new #7 and #8 are also back to back par 3s as you mention.
The hard holes from the old Marsh course wound up on the current Bay Island, and that is considered the toughest of their courses today.
For as many times as I've played all of their 5 courses, it never even crossed my mind when I read Doug's post. You are right, they have back-to-backs twice on the same round!