Well speaking for ME, which is all I can do...
I say hit on me!
If someone hits on me HARD, that is, says: "you are SO sexy, I HAVE to have you, I'm dying to fuck you" and so on, he has a lot better chance than with a slower, or more classically 'seductive', approach.
I also am much less likely to go for an ad than to be serendipitously seduced on a spur of the moment come-on.
In fact one of the most exciting little bonks I ever had was with someone who did a VERY blatant and inappropriate come-on in a very public place.
He risked my screaming or otherwise causing a major scene.
But it paid off, for both of us.
So my advice is: no guts, no older women sex.