Graham:
yes, you're right; they already get out of the way just because I'm standing there looking through the camera in their general direction. But apart from my current problem with it, it was exactly the same decades ago when I wanted to make 'normal' pictures of resorts etc, for travel companies: people still tried to avoid the evil eye! It looks so wrong to see empty lanes within a pedestrian traffic flow!
Keith:
yes, I did consider that option and even tried some shots in the hope of making the people look more phantasmagorical as they fled (slowly) across my vision, but the problem then was thinness of stream. To catch what I was looking for requires a thick flow of people that wasn't there. Actually, jjj was right about the elevated vantage point, and the Sunday market, in contrast with the local option, offers that, even if only the added height of a stone bench at the edge of the market area. Thing is, it means getting up at 7.30 a.m. just to find a parking space! Remember it all too well from when Ann used to go shopping each week. Also, it could all be in vain, because the stalls employ overhead plastic sheets to keep off rain, and also umbrellas in summer, so the likelihood is lots of plastic tops with little humanity on show! But the honest bottom line is this: to rise early or not to rise early! I'm not sure it's worth the sacrifice!
But here's a funny thing: when I have tried the occassional 'street' kind of image, I have always felt a bit unhappy about doing it; but, trying to get a specific 'look' into a shot removes that entirely - it's like being absolved of some sort of guilt! How peculiar the workings of the mind: I never felt any such qualms doing anything in public as a pro...
The best illustration of what I'm after is to be found in a shot of a huge Bombay railway station of many years ago by Frank Horvat; I think HC-B did the same thing - or perhaps it was the other way around. It's from on high and some people are frozen, the rest in motion.
Rob