This seems like a good topic... Identifying forced layups and asking what makes a good one and what makes a bad one... and why...
Probably been discussed on here before my time... everything seems to have been...
On a general note, I prefer forced layups with a choice on the layup, usually brought about by a diaganol... Again generally speaking, I dislike forced layups that ask you to hit the same club twice (e.g. 3 iron, 3 iron for the longer hitter, possibly creating difficulty for the shorter hitter's second shot)...
I'll think of some examples...