flarepilot, I accept that in some odd cases an ILS may have higher mins than an NPA to the same runway (Bloggs, thanks for noting the slightly higher min for the CDA and how that could affect the approach, I had intentionally glossed over that because it doesn't detract from my main point.)
My main point is that you should not be altering the way you fly an approach on rare occasions in order to increase your chances of getting in. You fly the approach one way, the same way, every time, and if that doesn't get you in then you go elsewhere. The only approach worse than a dive and drive is a dive and drive by an out of practice pilot who normally does CDAs.
The ONLY time you do something different is if you have run out of options and are forced to bust minima, even then I think a CDA with lower min would be safer than a dive and drive.