I wouldn't know . . . I've had two long-term relationships, total, since 1986. All my short-term ones were before that. So I'm 35+ years out of date!
In québécois they do (cruiser is more common than draguer). I haven't heard it in English for a long time.
At any rate, tango is a terrible backdrop for that activity. Too many people watching who you enter and leave with, and how you behave in between, and generally nowhere to talk quietly. For that matter, good luck checking people out in a place where a cabeceo is blocked by milling mobs.