Why do people feel the need to make things so complicated? If it is blatant, then bring it up directly (and I mean like early on, not like after an ace in the 2nd set
). You have a right to do so, and they shouldn't get upset over you bringing it up. If they do, that's really their problem, not yours.
All these 'I'll sugar coat my complaint in an insincere compliment' or 'well I'll foot fault too to send a message', or other like options range from inefficiently indirect to downright passive-aggressive. I tell you what, tactics like that are easy to see through and they annoy me a heck of a lot more than a simple direct approach. Maybe that's the real intent of those approaches after all, to be condescending or antagonistic rather than to simply try to resolve the issue.