Suckers for St. Louis barbecue could make a sport of tooling around the metro area tracking down their favorite sidewalk vendors. A good sense of smell would be the paramount prerequisiteyou can never be sure which corner your top smoker will appear on, let alone the hour. For many years this was true of Redman Harris, as he carted his mobile barbecue unit up and down Chambers Road. But Red the Bar-B-Que Man has a permanent standat the end of a residential strip in Ferguson. You can't miss it. It's red. And it looks like it's on fire. The guys at the five grills would sooner toss you on one of 'em than reveal the recipe for Red's vinegar-spiked sauce. (To be sure, it brings on a slow eye-watering, but the Red Man's meat tastes just as good when gobbled dry.) The stand's open Tuesday and Thursday from 10 a.m. till 10 p.m. and Saturday from 10 a.m. till midnight.