The trick with the wider-net method of finding accomodating**women is to:
1) Never, ever deal with just one woman at a time; women can sense when a guy has concentrated all his attentions on them, and that is almost always when the headgaming starts.
[Why do you think that so many women are so avidly trying to nail down a relationship in the first place, eh? The bottom-line answer is because they know that this will allow them to start behaving badly; they've finally gotten you isolated, and now they can afford to whip out their grab-bag of neurotic behavior].
If, on the other hand, a chick is completely aware that a guy is interested in other women at the same time that he is chatting her up, it acts as a positively huge deterrent to the headgames she might otherwise contemplate; she'll know with virtual certainty that any bullshyt in her part will result in a Wile E. Coyote -shaped smoke ring on the part of the guy in question, so it cuts down on the amount of headgamey crap she's likely to pull.
2) Don't take it personally if a woman rejects you/isn't interested. This is a hard one, true, but as I've often told my male friends over the years, there is simply no accounting for taste.
Over the years I've personally had so many experiences with having even the plain-Janes of the world utterly shutting me down, and then the very next day women that are smoking hot being extremely interested, that I've concluded that there is often no rhyme or reason for a woman to be interested/not -- and hence no reason to take rejection (or, on the flip side, even acceptance) personally.
Looking at the above phenomena from a more personal standpoint, I've come to conclude that even I myself have behaved in a similar manner to chicks like the above; there have been many, many times when attactive women have hit me up quite directly, and I was just not interested -- and then, the very next day, a plain-Jane would hit me up and I'd be all about it.
People are fickle, to say the least, and when it comes to sexuality this goes double.
3) Remember that when one is intending to sleep around, the absolute hardest woman to deal with is the first one in the group of available women you are trying to collect; once you have at least one woman that is willing to sleep with you, all the others become (comparatively speaking) a walk in the park.
Women can tell if a guy is getting any or not, and if she senses that you have other options, the bullshyt she'll dish out diminishes rapidly, and for the same reasons as detailed in point #1, above.
Furthermore, it's just a fact of female nature that they are attracted to what other women find attactive; if a chick knows that other women are competing for your sexual attention, she is much, much more likely to want to sleep with you in the first place.
Weird, yes, but absolutely true.
4) As far as a woman flaking on you, let them. If a chick is going to be so ridiculous as to tip her hand at this point in the game -- where your investment is/should be absolutely minimal -- then that is a good thing, eh?
In the getting-laid game, you should put up with absolutely NO bullshyt; the very moment that a chick starts to get weird on you, run -- do not walk -- away.
If a chick (for instance) starts chatting up another guy on her cell-phone during her dinner-date with you -- leave the freaking resturaunt, eh? Just get up and go. Jump in your car and go hang out with your buddies and/or a less flaky chick.
This is, I admit, a rather ruthless way of looking at things, but that is just the way that the dating market works these days; harsh, yes, but true.
On the other hand, trust me when I say that (for example) the very first time you are driving along and the chick in the car starts to flake on you with neurotic weirdness, when you pull the car over, look her directly in the face, and tell her to get out...her expression will be priceless.
The trick here is to (basically) have some pride, and to remember that any chick that starts to flake on you (e.g.,**treat you badly) before the relationship has even gotten off the ground, deserves nothing**more than a simple "no, thank you, I'm not buying any bullshyt today. Buh-bye, have a nice day".