As mentioned before there is no lack of "how to" information on churning any of and all of the possible cards here on FT but some things are intentionally left vague for fear that the card issuers correct obvious deficiencies in their own policies.

It's best if you take what information is already available here and start your own investigation. You'll be surprised at how much information the card issuers are willing to share with you if you take the time.