Are we defining forced carry as required to reach the green or prime LZ on a fw or as a truly forced carry with no way around? I would call the former an optional carry.
I would love to see an actual statistical analysis of how many truly forced carries there are in America. I do know its more than GBI, especially in places like Florida, where lakes are required to drain flat property. And, most courses do seem to have a forced carry on at least one par 3 hole.
Overall, of 16,000 courses and approximately 250,000 golf holes how many feature one forced carry? More than one? I am guessing its far fewer than we suppose, because like Pete Dye, most gca's try to avoid them wherever possible, knowing how hard they are for average players.
Thinking back to my projects opened last year, I can count 3 on one course, 4 on another, and 5 on another, each out of 36 potential shots, and counting fairly liberally. That's 11% of shots or 1 of 9. Are we counting babbling brooks that cross the fw in front of the tee or beyond the landing area, or just irrigation/detention/decorative lakes?