Again, I would like to thank everyone for their insightful comments/opinions. You have all provided much food for thought on the subject but ultimately, it is a personal decision. So, for now, after discussion with my wife and the insight provided from those who have responded, we have decided to stay with one, single-hoop bar over the driver.
I will certainly review my head's relationship with the support pillars to see how easily it will contact in an accident and take corrective measures as I see necessary (i.e. padding).
My wife has reserved final decision-making based upon how comfortable she feels in the vehicle after we have cruised around for a while. I did point out that plenty of other convertibles do not have any type of protection, especially older models. If my wife is uncomfortable my choices will be...
1) Retrofit an additional roll bar or a full-width version
2) Get a different vehicle
3) Get a different wife
I don't need to think about those choices, it will definitely be #3...oops, I meant #1.
I hope she doesn't see this, because it will then be #2.
