STEP TWO
That is the easiest way to sit next to a hot chick. The problem with this strategy is basically this - people know about it and follow it on a regular basis. I've tried to be the last guy to board on a number of occasions and some dude (usually Chinese) will say politely "you first".
I've tried to say "no you first" but it usually results in a verbal tussle over who's going to be more polite.
This strategy is a big FAIL sorry but its been tried and tested. What is more is that even if you got it, there is always some dude who has sat in the wrong seat and has to push you out and there is a reason for this.
Airlines PURPOSELY put the seat number not directly above the seat but between your seat and the one in front or behind as the case may be. They do this to cause nuisance and seat shuffling and they should be sued for it. So you can sit next to the hot chick and get promptly relocated in front which is embarrassing once you've exchanged the customary bumps with your luggage bag, a "hello" and few smiles.
That happened to me recently and I was so pissed with the guy who took my seat, I farted all the way to my destination, hoping that the hot chick would think it was the dude who stole my seat

I don't know if it worked but she did spend an inordinate amount of time walking around the plane.
By the way, have any of you noticed how on local flights in certain countries they now bunch non-nationals for seating into a specific area (which is seating only non-nationals of the country being visited)? That also causes problems, especially if you want a aisle seat.
Next time you hit Hong Kong, remember to do some Lan Kwai Fong - the thing is buzzing electric......