Craig and Mark,
Although I have not yet played 1/2 of the courses that Flynn was involved with, I have played more than 1/2 of the courses where Flynn did the original design work on. Through the course of my research, I have seen detailed drawings and photographs of others that I have not yet had the pleasure of seeing/playing first hand. This spring and summer will be spent adding to the list of Flynn courses that I witness first hand.
I, too, feel that there is a simplicity of the margins of many of Flynn's bunkers. There may not be drama in these outlines, yet there certainly is drama when it comes to their locations (as Mark points out) along with the visual impact and strategic impact of play that they invoke.
Some drama can be seen in the size of Flynn's bunkering as well, take for instance the bunkers around the 14th green at Philadelphia CC, that was so well recently worked on by Ron Forse, Jim Nagle, Mike McNulty and others. There are, of course, other examples of bunkers, such as at Shinnecock, Lehigh, Rolling Green, CC Brookline, Pine Valley and others in hillsides and built-ups around greens that look great and play great as well. Definitely high drama and done right!
I understand from the historian at Elyria (JCallihan) that there is outstanding work in the three Cleveland area courses, especially the CC in Pepper Pike. Aerials sent to me from DWexler of Pepper Pike and the CC from 1937 show some of Flynn's large and conservatively shaped bunkering but also what appear to be highly complex works as well.
Of course, if we view the evolution of Merion as a collaborative effort between the kindred design spirits of HWilson and Flynn, the shapes and surrounds of Merion are far from simple with a great deal of human shaping and a hand made look that surrvived until so recently. Yet the bunkering at Indian Creek (What a great golf course and engineering achievement!!) is very reminiscent of the Merion bunkers at least in the beginning. At present day, the outlines have been simplified for maintainance considerations. Yet they were originally something far from what is considered typical Flynn.
It seems as though Flynn's body of work demonstrates that he was often times revolutionary, had great vision for the future of golf, and was not compartmentalized into narrow design tendencies and proceeded to push into many outstanding design directions. And let us not forget his many similarly outstanding contributions to green keeping, use of trees, and turfgrass research. He was a rennaissance man in golf.
I have approached an outstanding person to help develop the Flynn book project that I have been hard at work on. I think with his help, the project will be completed sooner (by the 2004 Shinnecock Open perhaps) and with far greater expertise. Certainly, the subject matter demands an outstanding effort.