TD and Sean,
I agree the clusters don't always translate, but they can. Certainly, five perfectly round pot bunkers isn't as good an artistic composition as ones of varying size, shape, and swoop.
Actually, when I draw a cluster on plan, I purposely exaggerate the variances, knowing they can tend to come out similar in the field, if the shaper isn't the most creative. There is actually an art to clustering bunkers, too. Just like a building has the biggest stones on bottom, usually the bigger bunkers need to be in the lower ranges of the cluster, or they can look top heavy. Again, the key word is "usually." Its one of those things where all things are possible if well done, but you sometimes feel safer taking the tried and true method.....