Depends who you are naturally. If you are a bit wimpy and have a naturally boring personality, you need to be C+F. If you aren't great looking, you need to have a natural confidence.....remember, C+F is masculine behavior. This is like women saying you don't need to be girly and feminine, but we all know that makes women far hotter.
If you are good looking alpha already, you might want to lay down on C+F as chicks will think you are too full of it, but if you are an average joe but with an irrepresible personality, fun to be around and unpredictable, that puts you streets ahead of an average joe who is a nice guy.
Also, C+F stops you from ever getting in the friendzone. The casualty is that some chicks will get irritated by it, but on balance CF beats nice guy.
I am still working out when to use it, but used in bursts along with showing maturity when it counts would be the ideal scenario. You can't talk a woman into great sex by being nice IMO.