You have few things going against you ...
1) Boasting that "most of us would recognize you if you posted under your real name" ... what does that have to do with anything?
2) Having a person who is poorly compensated doing your resume for you ... you are not working but have no time to do own resume? As so-called Mensa member, I would think that you would want to do own resume.
3) " I actually agree there is more to street smarts than a high IQ. If anything that is a fault I possess, but my previous business successes are pretty great, too." You are admitting that having high IQ trumps everything else regarding "street smarts."
4) "All my friends and my wife have Masters and Doctorates" - that is a crock - I don't care who you hang around with - not all your friends will have Masters and Doctorates
5) You are asking people at job fairs about this. AND ... people here? That is asinine.
6) You were the "go-to" guy? How could you ever have been the "go-to" guy? You are relying on resume writer to write your own fricking resume, you are asking people on running chat forum whether you should put idiotic IQ mention on resume, you are asking people at job fairs when they are usually poorly trained.