Demo and fitting are different cases. For a strict demo, you might find a retailer with a fitting head that will let you take some hits or there may be a demo day locally. If you are thinking of getting fit for a new driver, a Titleist Thursday can fit you to a driver for your best performance, and at n/c. It may not be a TS-4. Jim McClain has a solid reputation, but you can expect to pay for the fitting professional to spend time with you if you don't (intend to) purchase.

In any event, for a the cost of a new driver, I seek a full fitting as what I guess I need is invariably not the best fit.

So are you looking for a location in north Dallas country or someplace north of Dallas county? Tons of courses & shops in the Dallas metroplex.