I have personally gone to 2 different fitters, and neither one has been able to to do a damn thing to really eliminate the discomfort down there (it's more discomfort than serious numbness), despite being recommended, being a "real" fitter (their business is bike fitting, they're not an employee in a bike store who got an hour of training or something), and claiming to know what they're doing.

They can fit you better to the bike, but beyond that they don't see to be able to do anything for problems that they can't see in motion, like how you are hitting your saddle while riding. Helped immensely with clipless and knee pain, as well as lower back pain, but weren't worth a damn for foot pain either. In fact, my feet would have been far more comfortable sticking with my mountain bike shoes than they were in the road shoes I got, which caused foot numbness within a couple of *minutes* of riding. Had to try 3 different insoles before I found one that "helped"...had to buy a whole different brand of shoe to help more, and it's still not perfect, not by a long shot...

I find the OP's post very interesting - I'll have to get a super wide saddle for the next one I try (was already thinking about it, but this lends more weight to actually doing it).