I don't think men should be trying to hook up with women they don't know in normal situations.
Sure, maybe 1 out of 10 are down for it, but the other 9 women shouldn't have to put up with being hit on by random strangers, when they aren't in a situation that suggests they are out looking to be hit on. Especially if they are at work and required to be nice to customers.
Out at the club, fine. Almost anywhere else, you shouldn't be hitting on women at all.