From this review and my experience, I think it's risky to be lingering and looking suspicious on Main Street if you're not Asian as 80% of everyone around is. I used to live there all my younger life for years and I've seen the change. I never did the pick-up the girl off the street corner for some fun so giving that a try a couple of times last year was a trip.
Right now it's a buyers market, although the virus issue is a whole other story to mix in now, but yes, on Main Street between Roosevelt and Northern Blvd, the good thing is that it's lined with bus stops, so yes you could just come and stand around a bunch of people, and people watch. Now you'll notice that there's either a group of two or three youngish ladies (30's) standing together and looking around and at you and they could give you some kind of eye contact that they're available and at the same time talking among themselves as to whether or not you're too ugly, don't have money or you're a cop, and if you get brave enough to approach them, maybe you'll get the hint that they're "working". Or you'll find older ladies, (40's 50's) rushing around, trying to look classy, who'll be more obvious and just come out and ask you if you want a massage.
The usual place they'll take you is a walk up set of rooms with curtains that are shared and have wooden uncomfortable tables. No bathroom or shower, just strip off, haggle a price, usually they expect you to want to get sucked off with a condom and maybe FS to, sometimes more than that. The last girl I picked up I reviewed here, she was pretty cute and sexy, I just got her to feel her up naked and have her do the same to me, no sex cause I don't trust the street girls like that. I just wanted the sensual human contact. She was surprised I didn't want to fuck.
I don't think this is a big deal for cops as they could just raid the walk up places and find all kinds of people naked and sexing it up. The places are right around the corner and it's obvious what's going on.
I do see an issue with just being on the street and being seen trying to pick up any of these ladies and being seen by the low-level types you're likely to find in transportation hub areas, who will see you as being a mark to be ripped off or stalked since they feel you're breaking the law in some way. So watch your step and who's following you around.
I've also seen civilian Asians being totally aware of what you're doing and they're aware of the ladies being around selling themselves, so they look down on you and make faces and comments sometimes.
Just my two cents.
Peace.