Hi, are there any restrictions or general advice on churning Alaska Airlines business cards? I know about 2/3/4 for BofA personal cards and the 3 (4?) per-year limit on Alaska personal cards but haven't really found anything solid on business-card rules. Can you churn the cards and/or apply for them for more than one legitimate business? If so, what are the rules? Any AS business-card experts here? Thanks a lot.